Again, ignoring repeated words:
  
    cat bio-j-jsa-gut.dic \
      | sed \
          -e 's/^/_/g' \
          -e 's/$/_/g' \
          -e 's/[ql][jg]//' \
          -e 's/cs/c/g' \
          -e 's/ci/a/g' \
          -e 's/cy/a/g' \
          -e 's/cg/8/g' \
          -e 's/c\([^ca8o]\)/C\1/g' \
      | compare-contexts -lctx 1 -rctx 0 -colw 20 \
          'c*C' \
          'c*8' \
          'c*a' \
          'c*o'

     5  0.14  xC          79  0.19  _8         331  0.35  8a         258  0.41  _o
     5  0.14  aC          37  0.09  _ccc8      108  0.11  _a         163  0.26  qo
     3  0.08  xccccC      34  0.08  x8          79  0.08  oa          56  0.09  xo
     3  0.08  oC          30  0.07  xccc8       75  0.08  xa          31  0.05  _cco
     3  0.08  _cccC       27  0.06  xcc8        39  0.04  sa          30  0.05  _co
     3  0.08  _ccC        26  0.06  occc8       38  0.04  _ccca       19  0.03  so
     2  0.05  xcC         23  0.05  oc8         37  0.04  _cca        19  0.03  _ccco
     2  0.05  occcC       21  0.05  occ8        32  0.03  _ca         18  0.03  8o
     2  0.05  _ccccC      21  0.05  _cc8        23  0.02  _cccca       7  0.01  xccco
     1  0.03  xccC        18  0.04  o8          22  0.02  xccca        5  0.01  8cco
     1  0.03  scccC       14  0.03  _cccc8      21  0.02  occca        4  0.01  xcco
     1  0.03  sccC        10  0.02  a8          18  0.02  xcca         4  0.01  _cccco
     1  0.03  occC         9  0.02  _ccccc      16  0.02  occa         3  0.00  jo
     1  0.03  ocC          9  0.02  _ccccc      14  0.01  _ccccc       3  0.00  ao
     1  0.03  accccC       8  0.02  xc8         10  0.01  xcccca       2  0.00  xco
     1  0.03  _cC          7  0.02  xcccc8       8  0.01  xca          2  0.00  accco
     1  0.03  _C           7  0.02  _c8          8  0.01  sccca        2  0.00  _ccccc
     1  0.03  8ccccC       6  0.01  accc8        7  0.01  oca          2  0.00  8ccco
 -----  ----  ----         6  0.01  acc8         7  0.01  ja           1  0.00  xcccco
    37  1.00  TOT          4  0.01  sccc8        7  0.01  8cca         1  0.00  uo
                           4  0.01  qcc8         6  0.01  _ccccc       1  0.00  jccco
                           4  0.01  ac8          4  0.00  qca          1  0.00  8cccco
                           3  0.01  scccc8       3  0.00  xccccc   -----  ----  ----
                           2  0.00  xccccc       3  0.00  occcca     632  1.00  TOT
                           2  0.00  s8           3  0.00  jca     
                           2  0.00  qccc8        3  0.00  8ccca   
                           2  0.00  occcc8       2  0.00  xccccc  
                           2  0.00  acccc8       2  0.00  ua      
                           1  0.00  xccccc       2  0.00  scca    
                           1  0.00  scc8         2  0.00  qcca    
                           1  0.00  qcccc8       2  0.00  qa      
                           1  0.00  jcc8         2  0.00  jcca    
                           1  0.00  jc8          2  0.00  ga      
                           1  0.00  j8           2  0.00  8cccca  
                       -----  ----  ----         1  0.00  scccca  
                         423  1.00  TOT          1  0.00  sca     
                                                 1  0.00  qccca   
                                                 1  0.00  _ccccc  
                                                 1  0.00  8ca     
                                             -----  ----  ----    
                                               943  1.00  TOT     

  These data suggest that, ignoring gallows and \s/-plumes, the 
  \c/ strings always end in \ci/, \cy/, \cg/ or \o/. 
  
  Let's look again at the \c/ strings and their relationship to
  \s/-plumes and gallows.  For simplicity, let's map all gallows to
  `H', and \cs/ to `z'; for consistency, let's map \cy/ and \ci/ to `a',
  \cg/ to `8'.
  
    cat bio-j-jsa-gut.wds \
      | sed \
          -e 's/^/_/g' \
          -e 's/$/_/g' \
          -e 's/[ql][jg]/H/' \
          -e 's/cs/z/g' \
          -e 's/ij/k/g' \
          -e 's/ix/e/g' \
          -e 's/is/r/g' \
          -e 's/iiu/n/g' \
          -e 's/y/i/g' \
          -e 's/ci/a/g' \
          -e 's/cg/8/g' \
      | compare-contexts -lctx 0 -rctx 0 -colw 24\
          '[czH][czH]*a' \
          '[czH][czH]*o' \
          '[czH][czH]*8' \
          '[czH][czH]*[^czHao8]'

       718 0.40 Ha               106 0.30 Ho               379 0.23 Hc8               18 0.20 z_
       169 0.09 Hcca              63 0.18 zo               319 0.19 Hcc8              11 0.12 cce
       133 0.07 ccca              35 0.10 zcco             317 0.19 ccc8               9 0.10 cccz_
       108 0.06 zcca              34 0.10 ccco             296 0.18 zcc8               7 0.08 H_
        79 0.04 Hca               24 0.07 zco               84 0.05 Hccc8              6 0.07 He
        70 0.04 za                23 0.07 cco               54 0.03 cc8                5 0.05 ccccz_
        54 0.03 cccHca            19 0.05 Hco               51 0.03 zccc8              4 0.04 zce
        48 0.03 cca               13 0.04 Hcco              28 0.02 cccc8              4 0.04 zcccz_
        40 0.02 ccccHca            6 0.02 Hccco             22 0.01 Hzcc8              3 0.03 zccH_
        39 0.02 zccHca             4 0.01 cHco              21 0.01 zc8                3 0.03 Hcn
        39 0.02 cccca              4 0.01 Hzcco             10 0.01 cccHcc8            2 0.02 zc_
        37 0.02 zcccHca            3 0.01 zccco              9 0.01 cccHc8             2 0.02 ccz_
        33 0.02 zccca              3 0.01 cccco              9 0.01 cHcc8              2 0.02 ccr
        33 0.02 Hccca              1 0.00 zzcco              9 0.01 Hzc8               2 0.02 cccH_
        21 0.01 zccHa              1 0.00 zccHo              6 0.00 zcccHcc8           1 0.01 ze
        18 0.01 zca                1 0.00 zcHo               6 0.00 zccHcc8            1 0.01 zcr
        18 0.01 cccHa              1 0.00 zcHco              6 0.00 cHc8               1 0.01 zccz_
        14 0.01 cHcca              1 0.00 czco               5 0.00 H8                 1 0.01 cq
        14 0.01 Hzcca              1 0.00 ccccco             4 0.00 zzcc8              1 0.01 cn
        13 0.01 zcccHa             1 0.00 ccccHco            4 0.00 c8                 1 0.01 cl
        12 0.01 ccccHa             1 0.00 cccHo              3 0.00 ccccHcc8           1 0.01 cccHc_
        12 0.01 cHca               1 0.00 cccHco             3 0.00 ccHc8              1 0.01 cc_
        11 0.01 zccHcca            1 0.00 ccHo               2 0.00 zcccHc8            1 0.01 cHccz_
        11 0.01 ccHa               1 0.00 cHcco              2 0.00 zccHc8             1 0.01 Hcz_
         6 0.00 cccHcca            1 0.00 Hzco               2 0.00 cccHccc8           1 0.01 Hcr
         6 0.00 cHa            ----- ---- ----               2 0.00 cHccc8             1 0.01 Hccz_
         5 0.00 ca               349 1.00 TOT                2 0.00 Hcccc8             1 0.01 Hccccl
         5 0.00 Hcccca                                       1 0.00 zzcHcc8        ----- ---- ----
         4 0.00 zcHa                                         1 0.00 zcz8              91 1.00 TOT
         4 0.00 ccccHcca                                     1 0.00 zccHccc8      
         3 0.00 Hzca                                         1 0.00 ccHzccc8      
         2 0.00 zcccHcca                                     1 0.00 ccHccc8       
         2 0.00 zHcca                                        1 0.00 ccHcc8        
         2 0.00 cccza                                        1 0.00 Hczc8         
         2 0.00 Hczcca                                       1 0.00 Hcz8          
         1 0.00 zzcccHca                                     1 0.00 Hccz8         
         1 0.00 zzcca                                    ----- ---- ----          
         1 0.00 zzccHa                                    1664 1.00 TOT           
         1 0.00 zcccca                                                            
         1 0.00 zccccHcca                                                         
         1 0.00 zccHccca                                                          
         1 0.00 zcHcca                                                            
         1 0.00 zHa                                                               
         1 0.00 ccHzccca                                                          
         1 0.00 ccHcca                                                            
         1 0.00 cHccca                                                            
         1 0.00 Hczca                                                             
         1 0.00 Hccza                                                             
     ----- ---- ----                                                              
      1798 1.00 TOT                                                               

  From these table it seems (again) that \ci/ and \o/ are equivalent;
  and that \cg/ is similar, but not as much.  Also, virtually all \c/ strings
  end with these three letters; only a very few end with \ix/.   
  
  Below I have marked with `#/*', `@/&', `+', and `-' the contexts with 
  at least one frequency greater than 0.20, 0.08, 0.04, and 0.02,
  respectively:
  
     # 718 0.40 Ha             # 106 0.30 Ho             * 379 0.23 Hc8       
     @ 169 0.09 Hcca           &  63 0.18 zo             @ 319 0.19 Hcc8      
     & 133 0.07 ccca           &  35 0.10 zcco           & 317 0.19 ccc8      
     & 108 0.06 zcca           &  34 0.10 ccco           & 296 0.18 zcc8      
     *  79 0.04 Hca            +  24 0.07 zco            +  84 0.05 Hccc8     
     &  70 0.04 za             +  23 0.07 cco            +  54 0.03 cc8       
     -  54 0.03 cccHca         *  19 0.05 Hco            -  51 0.03 zccc8     
     +  48 0.03 cca            @  13 0.04 Hcco              28 0.02 cccc8     
        40 0.02 ccccHca        +   6 0.02 Hccco             22 0.01 Hzcc8     
        39 0.02 zccHca             4 0.01 cHco           +  21 0.01 zc8       
        39 0.02 cccca              4 0.01 Hzcco             10 0.01 cccHcc8   
        37 0.02 zcccHca        -   3 0.01 zccco          -   9 0.01 cccHc8    
     -  33 0.02 zccca              3 0.01 cccco              9 0.01 cHcc8     
     +  33 0.02 Hccca              1 0.00 zzcco              9 0.01 Hzc8      
        21 0.01 zccHa              1 0.00 zccHo              6 0.00 zcccHcc8  
     +  18 0.01 zca                1 0.00 zcHo               6 0.00 zccHcc8   
        18 0.01 cccHa              1 0.00 zcHco              6 0.00 cHc8      
        14 0.01 cHcca              1 0.00 czco           #   5 0.00 H8        
        14 0.01 Hzcca              1 0.00 ccccco             4 0.00 zzcc8     
        13 0.01 zcccHa             1 0.00 ccccHco            4 0.00 c8        
        12 0.01 ccccHa             1 0.00 cccHo              3 0.00 ccccHcc8  
        12 0.01 cHca           -   1 0.00 cccHco             3 0.00 ccHc8     
        11 0.01 zccHcca            1 0.00 ccHo               2 0.00 zcccHc8   
        11 0.01 ccHa               1 0.00 cHcco              2 0.00 zccHc8    
  
  Checking again, without repeated words:
  
    cat bio-j-jsa-gut.dic \
      | sed \
          -e 's/^/_/g' \
          -e 's/$/_/g' \
          -e 's/[ql][jg]/H/' \
          -e 's/cs/z/g' \
          -e 's/ij/k/g' \
          -e 's/ix/e/g' \
          -e 's/is/r/g' \
          -e 's/iiu/n/g' \
          -e 's/y/i/g' \
          -e 's/ci/a/g' \
          -e 's/cg/8/g' \
      | compare-contexts -lctx 0 -rctx 0 -colw 24\
          '[czH][czH]*a' \
          '[czH][czH]*o' \
          '[czH][czH]*8' \
          '[czH][czH]*[^czHao8]'  

       130 0.31 Ha                59 0.35 Ho                40 0.14 Hc8               12 0.18 z_
        28 0.07 cca               21 0.12 zo                37 0.13 ccc8               8 0.12 cce
        24 0.06 ccca              12 0.07 zco               33 0.12 Hcc8               6 0.09 H_
        23 0.06 Hcca              11 0.06 Hco               23 0.08 zcc8               5 0.08 He
        19 0.05 zcca              11 0.06 Hcco              23 0.08 cc8                4 0.06 zcccz_
        15 0.04 za                10 0.06 zcco              23 0.08 Hccc8              3 0.05 zce
        15 0.04 Hccca             10 0.06 cco               12 0.04 zc8                3 0.05 ccccz_
        15 0.04 Hca               10 0.06 ccco              11 0.04 zccc8              2 0.03 zc_
        11 0.03 cHca               4 0.02 cHco              11 0.04 Hzcc8              2 0.03 ccz_
        10 0.02 ccHa               4 0.02 Hzcco              9 0.03 cccc8              2 0.03 ccr
         9 0.02 cHcca              3 0.02 cccco              7 0.02 Hzc8               2 0.03 cccz_
         8 0.02 zccHa              2 0.01 Hccco              6 0.02 cHcc8              2 0.03 cccH_
         8 0.02 Hzcca              1 0.01 zzcco              5 0.02 cccHcc8            1 0.02 ze
         7 0.02 cccca              1 0.01 zccco              5 0.02 cHc8               1 0.02 zcr
         6 0.01 zca                1 0.01 zccHo              5 0.02 H8                 1 0.02 zccz_
         6 0.01 cccHa              1 0.01 zcHo               4 0.01 zcccHcc8           1 0.02 zccH_
         6 0.01 cHa                1 0.01 zcHco              3 0.01 ccccHcc8           1 0.02 cq
         5 0.01 zccca              1 0.01 czco               3 0.01 cccHc8             1 0.02 cn
         5 0.01 zcccHca            1 0.01 ccccco             3 0.01 c8                 1 0.02 cl
         5 0.01 ccccHca            1 0.01 ccccHco            2 0.01 zccHcc8            1 0.02 cccHc_
         5 0.01 cccHca             1 0.01 cccHo              2 0.01 cccHccc8           1 0.02 cc_
         5 0.01 ca                 1 0.01 cccHco             2 0.01 ccHc8              1 0.02 cHccz_
         4 0.01 zccHcca            1 0.01 ccHo               2 0.01 cHccc8             1 0.02 Hcz_
         4 0.01 zccHca             1 0.01 cHcco              1 0.00 zzcc8              1 0.02 Hcr
         4 0.01 ccccHcca           1 0.01 Hzco               1 0.00 zzcHcc8            1 0.02 Hcn
         4 0.01 Hcccca         ----- ---- ----               1 0.00 zcz8               1 0.02 Hccz_
         3 0.01 zcccHa           170 1.00 TOT                1 0.00 zcccHc8            1 0.02 Hccccl
         3 0.01 zcHa                                         1 0.00 zccHccc8       ----- ---- ----
         3 0.01 Hzca                                         1 0.00 zccHc8            66 1.00 TOT
         2 0.00 zHcca                                        1 0.00 ccHzccc8      
         2 0.00 cccza                                        1 0.00 ccHccc8       
         2 0.00 ccccHa                                       1 0.00 ccHcc8        
         2 0.00 cccHcca                                      1 0.00 Hczc8         
         2 0.00 Hczcca                                       1 0.00 Hcz8          
         1 0.00 zzcccHca                                     1 0.00 Hccz8         
         1 0.00 zzcca                                        1 0.00 Hcccc8        
         1 0.00 zzccHa                                   ----- ---- ----          
         1 0.00 zcccca                                     284 1.00 TOT           
         1 0.00 zccccHcca                                                         
         1 0.00 zcccHcca                                                          
         1 0.00 zccHccca                                                          
         1 0.00 zcHcca                                                            
         1 0.00 zHa                                                               
         1 0.00 ccHzccca                                                          
         1 0.00 ccHcca                                                            
         1 0.00 cHccca                                                            
         1 0.00 Hczca                                                             
         1 0.00 Hccza                                                             
     ----- ---- ----                                                              
       414 1.00 TOT                                                               

  Here is a summary of the most common \czH/ contexts.  The numbers are 
  the percentages from the tables above.  Due to an earlier mix-up,
  all percentages except those in the `H' row were computed relative to
  the totals minus the `H' entry.

             in .wds        in .dic
            ----------     ----------
            ci  cb  cg     ci  cb  cg
            --  --  --     --  --  --
     c       0   0   0      2   0   1

     z       6  26   0      5  19   0
     zc      2  10   1      2  11   4
                                     
     H      40  30   0     31  35   2
     
     Hc      7   8  23      5  10  14
     Hcc    16   5  19      8  10  12

     cc      4   9   3     10   9   8
     ccc    12  14  19      8   9  13
     zcc    10  14  18      7   9   8
                                     
     cccc    4   1   2      2   3   3
     zccc    3   1   3      2   1   4
                                     
     Hccc    3   2   5      5   2   8
                                     
     cccHc   5   0   1      2   1   1
     ccccHc  4   0   0      2   1   0
     zccHc   4   0   0      1   0   0
     zcccHc  3   0   0      3   0   0
  
  It seems that 
  
     \c/ alone is not a letter
     
     \z/,
     \zc/   are similar letters  
            (most common before \o/)
     
     \cc/, 
     \ccc/, 
     \zcc/  are similar letters 
            (equally common before \a/, \o/, \8/).
     
     \H/    is a common letter
            (most common before \a/ and \o/)
          
     
     \Hc/,
     \Hcc/  are similar letters  
            (most common before \o/ and \8/).
            The latter does not seem to be 
            a group \H/-\cc/.
     
     \Hccc/ may be a letter 
            (most common before \a/ and \o/)
            but may be a group \Hc/-\cc/
            or \H/-\ccc/

     \cccc/,
     \zccc/ may be rare letters
            (equally common before \a/, \o/, \8/).
            but may also be groups \cc/-\cc/ and 
            \zc/-\cc/
            
  Let's enumerate these various patterns:
  
    cat bio-j-jsa-gut.wds \
      | sed \
          -e 's/^/_/g' \
          -e 's/$/_/g' \
          -e 's/[ql][jg]/H/' \
          -e 's/cs/z/g' \
          -e 's/ij/k/g' \
          -e 's/ix/e/g' \
          -e 's/is/r/g' \
          -e 's/iiu/n/g' \
          -e 's/y/i/g' \
          -e 's/ci/a/g' \
          -e 's/cg/8/g' \
      | compare-contexts -lctx 0 -rctx 0 -colw 17 \
          '[^czH]z[^czH]' \
          '[^czH]zc[^czH]' \
          '[^czH]cc[^czH]' \
          '[^czH]ccc[^czH]' \
          '[^czH]zcc[^czH]' \
          '[^czH]H[^czH]' \
          '[^czH]Hc[^czH]' \
          '[^czH]Hcc[^czH]' 

       66 0.44 _za    19 0.27 _zco    22 0.16 _cc8   192 0.40 _ccc8   219 0.50 _zcc8
       63 0.42 _zo    16 0.23 _zca    19 0.14 _cca    97 0.20 eccc8    77 0.18 _zcca
        6 0.04 _z_    13 0.19 ezc8    17 0.12 _cco    78 0.16 _ccca    43 0.10 ezcc8
        5 0.03 ez_     6 0.09 _zc8    15 0.11 ecca    44 0.09 eccca    30 0.07 _zcco
        5 0.03 az_     3 0.04 _zce    15 0.11 ecc8    25 0.05 _ccco    19 0.04 8zcc8
        1 0.01 qza     3 0.04 8zco     9 0.07 _cce    11 0.02 8ccc8    18 0.04 ezcca
        1 0.01 oza     2 0.03 ezco     7 0.05 occ8     7 0.01 rccca     8 0.02 azcc8
        1 0.01 oz_     2 0.03 ezca     6 0.04 8cca     6 0.01 rccc8     6 0.01 rzcc8
        1 0.01 eza     1 0.01 rzc8     5 0.04 8cc8     6 0.01 accc8     6 0.01 azcca
        1 0.01 aza     1 0.01 ezce     3 0.02 qcc8     5 0.01 eccco     4 0.01 ezcco
        1 0.01 _ze     1 0.01 ezc_     3 0.02 ecco     4 0.01 occc8     3 0.01 rzcca
     ---- ---- ----    1 0.01 _zcr     3 0.02 8cco     3 0.01 8ccco     2 0.00 ozcca
      151 1.00 TOT     1 0.01 _zc_     2 0.01 rcca     2 0.00 occca     2 0.00 8zcca
                       1 0.01 8zc8     2 0.01 occa     1 0.00 qccc8     1 0.00 ozcc8
                    ---- ---- ----     2 0.01 jcca     1 0.00 accco     1 0.00 8zcco
                      70 1.00 TOT      2 0.01 ecce     1 0.00 accca  ---- ---- ---- 
                                       1 0.01 rccr     1 0.00 8ccca   439 1.00 TOT  
                                       1 0.01 qcca  ---- ---- ----                  
                                       1 0.01 jcc8   484 1.00 TOT                   
                                       1 0.01 ecc_                                  
                                       1 0.01 acc8                                  
                                       1 0.01 _ccr                                  
                                    ---- ---- ----                                  
                                     138 1.00 TOT                                                                        


      604 0.72 oHa   305 0.63 oHc8   254 0.51 oHcc8       
       61 0.07 eHa    66 0.14 oHca   120 0.24 oHcca       
       51 0.06 oHo    31 0.06 eHc8    31 0.06 eHcca       
       49 0.06 _Ho    27 0.06 _Hc8    29 0.06 eHcc8       
       35 0.04 _Ha    14 0.03 oHco    20 0.04 _Hcc8       
       18 0.02 aHa    14 0.03 aHc8    16 0.03 aHcc8       
        6 0.01 oH_     7 0.01 eHca    10 0.02 aHcca       
        5 0.01 eHo     4 0.01 aHca     7 0.01 _Hcca       
        4 0.00 oHe     3 0.01 oHcn     6 0.01 oHcco       
        3 0.00 oH8     3 0.01 _Hco     6 0.01 _Hcco       
        2 0.00 eHe     2 0.00 eHco     1 0.00 eHcco       
        2 0.00 _H8     2 0.00 _Hca     1 0.00 8Hcca       
        1 0.00 qHo     2 0.00 8Hc8  ---- ---- ----        
        1 0.00 _H_     1 0.00 oHcr   501 1.00 TOT         
     ---- ---- ---- ---- ---- ----                        
      842 1.00 TOT   481 1.00 TOT                         

  Ditto, distinct words only:

    cat bio-j-jsa-gut.dic \
      | sed \
          -e 's/^/_/g' \
          -e 's/$/_/g' \
          -e 's/[ql][jg]/H/' \
          -e 's/cs/z/g' \
          -e 's/ij/k/g' \
          -e 's/ix/e/g' \
          -e 's/is/r/g' \
          -e 's/iiu/n/g' \
          -e 's/y/i/g' \
          -e 's/ci/a/g' \
          -e 's/cg/8/g' \
      | compare-contexts -lctx 0 -rctx 0 -colw 17 \
          '[^czH]z[^czH]' \
          '[^czH]zc[^czH]' \
          '[^czH]cc[^czH]' \
          '[^czH]ccc[^czH]' \
          '[^czH]zcc[^czH]' \
          '[^czH]H[^czH]' \
          '[^czH]Hc[^czH]' \
          '[^czH]Hcc[^czH]' 

        21 0.44 _zo         8 0.22 ezc8       10 0.14 ecc8       15 0.21 eccc8       8 0.15 ezcc8
        11 0.23 _za         7 0.19 _zco        8 0.11 _cca       11 0.15 eccca       8 0.15 _zcc8
         5 0.10 az_         4 0.11 _zca        7 0.10 ecca       10 0.14 _ccc8       6 0.12 ezcca
         4 0.08 ez_         3 0.08 8zco        7 0.10 _cco        5 0.07 _ccca       6 0.12 _zcco
         1 0.02 qza         2 0.06 ezco        6 0.08 _cce        4 0.06 rccca       5 0.10 _zcca
         1 0.02 oza         2 0.06 ezca        5 0.07 _cc8        4 0.06 eccco       3 0.06 rzcca
         1 0.02 oz_         2 0.06 _zce        5 0.07 8cca        4 0.06 _ccco       3 0.06 ezcco
         1 0.02 eza         2 0.06 _zc8        2 0.03 rcca        3 0.04 occc8       3 0.06 azcca
         1 0.02 aza         1 0.03 rzc8        2 0.03 qcc8        3 0.04 accc8       3 0.06 8zcc8
         1 0.02 _ze         1 0.03 ezce        2 0.03 occa        3 0.04 8ccc8       2 0.04 rzcc8
         1 0.02 _z_         1 0.03 ezc_        2 0.03 occ8        2 0.03 rccc8       1 0.02 ozcca
     ----- ---- ----        1 0.03 _zcr        2 0.03 jcca        2 0.03 occca       1 0.02 ozcc8
        48 1.00 TOT         1 0.03 _zc_        2 0.03 ecce        1 0.01 qccc8       1 0.02 azcc8
                            1 0.03 8zc8        2 0.03 8cco        1 0.01 accco       1 0.02 8zcco
                        ----- ---- ----        2 0.03 8cc8        1 0.01 accca       1 0.02 8zcca
                           36 1.00 TOT         1 0.01 rccr        1 0.01 8ccco   ----- ---- ---- 
                                               1 0.01 qcca        1 0.01 8ccca      52 1.00 TOT  
                                               1 0.01 jcc8    ----- ---- ----                    
                                               1 0.01 ecco       71 1.00 TOT                     
                                               1 0.01 ecc_                                       
                                               1 0.01 acc8                                       
                                               1 0.01 _ccr                                       
                                           ----- ---- ----                                       
                                              71 1.00 TOT                                        



        72 0.35 oHa        23 0.34 oHc8       13 0.19 oHcc8
        34 0.17 _Ho         8 0.12 oHco        9 0.13 oHcca
        23 0.11 eHa         8 0.12 eHc8        9 0.13 eHcc8
        19 0.09 oHo         6 0.09 oHca        7 0.10 eHcca
        19 0.09 _Ha         4 0.06 eHca        6 0.09 oHcco
        16 0.08 aHa         4 0.06 aHca        6 0.09 _Hcc8
         5 0.02 oH_         4 0.06 aHc8        5 0.07 aHcc8
         5 0.02 eHo         4 0.06 _Hc8        4 0.06 _Hcco
         3 0.01 oHe         2 0.03 eHco        3 0.04 aHcca
         3 0.01 oH8         1 0.01 oHcr        3 0.04 _Hcca
         2 0.01 eHe         1 0.01 oHcn        1 0.01 eHcco
         2 0.01 _H8         1 0.01 _Hco        1 0.01 8Hcca
         1 0.00 qHo         1 0.01 _Hca    ----- ---- ---- 
         1 0.00 _H_         1 0.01 8Hc8       67 1.00 TOT  
     ----- ---- ----    ----- ---- ----                    
       205 1.00 TOT        68 1.00 TOT                     

  Obviously the subset of these letters that begins with `H'
  is different from the others in that the `H' is usually
  preceded by \o/, whereas the rest is usually word-initial
  (in .wds) or preceded by \ix/ (in .dic).
                                                        
  Let's see what we have left out:
  
    cat bio-j-jsa-gut.wds \
      | sed \
          -e 's/^/_/g' \
          -e 's/$/_/g' \
          -e 's/[ql][jg]/H/' \
          -e 's/cs/z/g' \
          -e 's/ij/k/g' \
          -e 's/ix/e/g' \
          -e 's/is/r/g' \
          -e 's/iiu/n/g' \
          -e 's/y/i/g' \
          -e 's/ci/a/g' \
          -e 's/cg/8/g' \
      | enum-contexts -vPAT='[czH][czH]*' -vCTX=0 \
      | egrep -v -e '^(z|zc|cc|ccc|zcc|H|Hc|Hcc)$' \
      | wfreq
      
       123 0.15 Hccc
        87 0.11 zccc
        70 0.09 cccc
        65 0.08 cccHc
        41 0.05 zccHc
        41 0.05 ccccHc
        40 0.05 Hzcc
        39 0.05 zcccHc
        25 0.03 zccH
        24 0.03 cHcc
        22 0.03 cHc
        21 0.03 cccH
        17 0.02 zccHcc
        16 0.02 cccHcc
        13 0.02 zcccH
        13 0.02 Hzc
        12 0.02 ccccH
        12 0.02 ccH
        12 0.02 c
        11 0.01 cccz
         8 0.01 zcccHcc
         8 0.01 Hcccc
         7 0.01 ccccHcc
         6 0.01 zzcc
         6 0.01 cH
         5 0.01 zcH
         5 0.01 ccccz
         4 0.01 zcccz
         3 0.00 ccHc
         3 0.00 cHccc
         3 0.00 Hccz
         2 0.00 zccHccc
         2 0.00 zHcc
         2 0.00 ccz
         2 0.00 cccHccc
         2 0.00 ccHzccc
         2 0.00 ccHcc
         2 0.00 Hczcc
         2 0.00 Hczc
         2 0.00 Hcz
         1 0.00 zzcccHc
         1 0.00 zzccH
         1 0.00 zzcHcc
         1 0.00 zcz
         1 0.00 zccz
         1 0.00 zccccHcc
         1 0.00 zcccc
         1 0.00 zcHcc
         1 0.00 zcHc
         1 0.00 zH
         1 0.00 czc
         1 0.00 ccccc
         1 0.00 ccHccc
         1 0.00 cHccz
     ----- ---- ----
       794 1.00 TOT


  Again, with some context:
    
    cat bio-j-jsa-gut.wds \
      | sed \
          -e 's/^/_/g' \
          -e 's/$/_/g' \
          -e 's/[ql][jg]/H/' \
          -e 's/cs/z/g' \
          -e 's/ij/k/g' \
          -e 's/ix/e/g' \
          -e 's/is/r/g' \
          -e 's/iiu/n/g' \
          -e 's/y/i/g' \
          -e 's/ci/a/g' \
          -e 's/cg/8/g' \
      | enum-contexts -vPAT='[^czH][czH][czH]*[^czH]' -vCTX=0 \
      | egrep -v -e '[^czH](z|zc|cc|ccc|zcc|H|Hc|Hcc)[^czH]' \
      | wfreq

        51 0.06 _cccHca
        41 0.05 oHccc8
        38 0.05 _zccc8
        37 0.05 _zccHca
        35 0.04 _zcccHca
        35 0.04 _ccccHca
        34 0.04 _Hccc8
        32 0.04 _cccca
        23 0.03 _zccca
        21 0.03 oHccca
        20 0.03 _cccc8
        19 0.02 _zccHa
        16 0.02 oHzcc8
        16 0.02 _cccHa
        12 0.02 _zcccHa
        12 0.02 _ccccHa
        11 0.01 _zccHcca
        10 0.01 _ccHa
         9 0.01 _cccHc8
         8 0.01 eHccc8
         8 0.01 _cccz_
         8 0.01 _cccHcc8
         8 0.01 _Hccca
         7 0.01 oHzcca
         7 0.01 ezccc8
         7 0.01 _cHcca
         6 0.01 oHzc8
         6 0.01 _zccHcc8
         6 0.01 _cccHcca
         6 0.01 _Hccco
         5 0.01 ezccca
         5 0.01 ecccc8
         5 0.01 _zcccHcc8
         5 0.01 _Hzcca
         4 0.01 ocHcca
         4 0.01 ocHca
         4 0.01 ecccca
         4 0.01 eccccHca
         4 0.01 _zzcc8
         4 0.01 _cHcc8
         4 0.01 _cHca
         4 0.01 _cHc8
         4 0.01 _Hzcc8
         3 0.00 rzccc8
         3 0.00 oHcccca
         3 0.00 jca
         3 0.00 ecccHca
         3 0.00 eHccca
         3 0.00 azccca
         3 0.00 _zccco
         3 0.00 _zccH_
         3 0.00 _zcHa
         3 0.00 _ccccz_
         3 0.00 _ccHc8
         3 0.00 _cHco
         3 0.00 _cHa
         3 0.00 _Hzcco
         2 0.00 rcccHa
         2 0.00 qcHcc8
         2 0.00 qcHc8
         2 0.00 qcHa
         2 0.00 ocHcc8
         2 0.00 oHcccc8
         2 0.00 ezcccz_
         2 0.00 ezcccHca
         2 0.00 ezccHca
         2 0.00 ezccHa
         2 0.00 acHca
         2 0.00 _zcccHcca
         2 0.00 _zcccHc8
         2 0.00 _zccHc8
         2 0.00 _zHcca
         2 0.00 _cccza
         2 0.00 _ccccHcca
         2 0.00 _ccccHcc8
         2 0.00 _cccHccc8
         2 0.00 _cccH_
         2 0.00 _Hzc8
         2 0.00 8zccca
         2 0.00 8zccc8
         2 0.00 8c8
         1 0.00 rcn
         1 0.00 rccz_
         1 0.00 rcccz_
         1 0.00 rcccca
         1 0.00 rcccc8
         1 0.00 qca
         1 0.00 qcHccc8
         1 0.00 qcHcca
         1 0.00 qcHca
         1 0.00 ozccHo
         1 0.00 occHcc8
         1 0.00 ocHco
         1 0.00 ocHccz_
         1 0.00 ocHcco
         1 0.00 oHzca
         1 0.00 oHczcca
         1 0.00 oHczca
         1 0.00 oHczc8
         1 0.00 oHcz_
         1 0.00 oHcz8
         1 0.00 oHccza
         1 0.00 oHccz_
         1 0.00 oHccz8
         1 0.00 oHccccl
         1 0.00 jczco
         1 0.00 jc8
         1 0.00 ezcz8
         1 0.00 ezcccHcc8
         1 0.00 ezcccHa
         1 0.00 ezcHa
         1 0.00 eccz_
         1 0.00 eccccz_
         1 0.00 ecccco
         1 0.00 eccccHcca
         1 0.00 eccccHcc8
         1 0.00 ecccHcc8
         1 0.00 eccHa
         1 0.00 eHzcca
         1 0.00 eHzcc8
         1 0.00 eHczcca
         1 0.00 azcccca
         1 0.00 azccc8
         1 0.00 accccz_
         1 0.00 acccca
         1 0.00 accccHcca
         1 0.00 accccHca
         1 0.00 acccc8
         1 0.00 acHcca
         1 0.00 acHa
         1 0.00 aHzcco
         1 0.00 aHzcc8
         1 0.00 aHzca
         1 0.00 aHcccca
         1 0.00 aHccca
         1 0.00 aHccc8
         1 0.00 _zzcco
         1 0.00 _zzcccHca
         1 0.00 _zzcca
         1 0.00 _zzccHa
         1 0.00 _zzcHcc8
         1 0.00 _zccz_
         1 0.00 _zcccz_
         1 0.00 _zccccHcca
         1 0.00 _zccHccca
         1 0.00 _zccHccc8
         1 0.00 _zcHo
         1 0.00 _zcHco
         1 0.00 _zcHcca
         1 0.00 _zHa
         1 0.00 _cccco
         1 0.00 _ccccco
         1 0.00 _ccccHco
         1 0.00 _cccHo
         1 0.00 _cccHco
         1 0.00 _cccHc_
         1 0.00 _ccHzccc8
         1 0.00 _ccHo
         1 0.00 _ccHccc8
         1 0.00 _ccHcca
         1 0.00 _cHccca
         1 0.00 _cHccc8
         1 0.00 _Hzco
         1 0.00 _Hzca
         1 0.00 _Hcccca
         1 0.00 8zcccz_
         1 0.00 8cccco
         1 0.00 8cccca
         1 0.00 8cccc8
         1 0.00 8cccHcc8
         1 0.00 8Hzcca
     ----- ---- ----
       785 1.00 TOT

  These may be groups of the letters above.
  
  So here is the situation for maximal `czH' strings (after collapsing
  \ci/, \cy/ to `a', and \cg/ to `8', and all gallows to `H'):
  
    string  freq  plausible interpretations
    ------  ----  -------------------------
     
    c          8  invalid
    z        151  a letter.
    H        842  a letter.
                  
    cc       138  a letter.
    zc        70  a letter.
    Hc       481  a letter.
    cz         -  invalid.
    zz         -  invalid.
    Hz         -  invalid.
    cH         6  invalid.
    zH         1  invalid, or z+H.
    HH         -  invalid.
                  
    ccc       71  a letter.
    zcc       52  a letter, or z+cc.
    Hcc       67  a letter, or H+cc.
    czc        1  invalid.
    zzc        -  invalid.
    Hzc       13  a letter, or H+zc.
    cHc       22  a letter (gallows with platform?).
    zHc        -  invalid.
    HHc        -  invalid.
    ccz        2  invalid, or cc+z.
    zcz        1  invalid, or zc+z.
    Hcz        2  invalid, or Hc+z.
    czz        -  invalid.
    zzz        -  invalid.
    Hzz        -  invalid.
    cHz        -  invalid.
    zHz        -  invalid.
    HHz        -  invalid.
    ccH       12  a letter, or cc+H.
    zcH        5  a letter, or zc+H.
    HcH        -  invalid.
    czH        -  invalid.
    zzH        -  invalid.
    HzH        -  invalid. 
    cHH        -  invalid.
    zHH        -  invalid.
    HHH        -  invalid. 
    
    cccc      70  a letter, or cc+cc.
    zccc      87  a letter, or zc+cc, or z+ccc.
    Hccc     123  a letter, or Hc+cc, or H+ccc.
    czcc       -  invalid.
    zzcc       6  invalid, or z+zcc, or z+z+cc.
    Hzcc      40  a letter, or H+zcc, or H+z+cc.
    cHcc      24  a letter.
    zHcc       2  invalid, or z+Hcc, or z+H+cc.
    HHcc       -  invalid.
    cczc       -  invalid.
    zczc       -  invalid.
    Hczc       2  invalid, or Hc+zc.
    czzc       -  invalid.
    zzzc       -  invalid.
    Hzzc       -  invalid.
    cHzc       -  invalid.
    zHzc       -  invalid.
    HHzc       -  invalid.
    ccHc       3  invalid, or cc+Hc.
    zcHc       1  invalid, or zc+Hc.
    HcHc       -  invalid.
    czHc       -  invalid.
    zzHc       -  invalid.
    HzHc       -  invalid.
    cHHc       -  invalid.
    zHHc       -  invalid.
    HHHc       -  invalid.
    cccz      11  letter, or ccc+z.
    zccz       1  invalid, or zcc+z, or z+cc+z.
    Hccz       3  invalid, or Hcc+z, or H+cc+z.
    czcz       -  invalid.
    zzcz       -  invalid.
    Hzcz       -  invalid.
    cHcz       -  invalid.
    zHcz       -  invalid.
    HHcz       -  invalid.
    cczz       -  invalid.
    zczz       -  invalid.
    Hczz       -  invalid.
    czzz       -  invalid.
    zzzz       -  invalid.
    Hzzz       -  invalid.
    cHzz       -  invalid.
    zHzz       -  invalid.
    HHzz       -  invalid.
    ccHz       -  invalid.
    zcHz       -  invalid.
    HcHz       -  invalid.
    czHz       -  invalid.
    zzHz       -  invalid.
    HzHz       -  invalid.
    cHHz       -  invalid.
    zHHz       -  invalid.
    HHHz       -  invalid.
    cccH      21  letter, or ccc+H.
    zccH      25  letter, or zcc+H, or z+cc+H.
    HccH       -  invalid.
    czcH       -  invalid.
    zzcH       -  invalid.
    HzcH       -  invalid.
    cHcH       -  invalid.
    zHcH       -  invalid.
    HHcH       -  invalid.
    cczH       -  invalid.
    zczH       -  invalid.
    HczH       -  invalid.
    czzH       -  invalid.
    zzzH       -  invalid.
    HzzH       -  invalid.
    cHzH       -  invalid.
    zHzH       -  invalid.
    HHzH       -  invalid.
    ccHH       -  invalid.
    zcHH       -  invalid.
    HcHH       -  invalid.
    czHH       -  invalid.
    zzHH       -  invalid.
    HzHH       -  invalid.
    cHHH       -  invalid.
    zHHH       -  invalid.
    HHHH       -  invalid.