/\abcde
a+.+b?a+.+b+
 /\/\/ dabcbbbcaacaeaccdddd
 \     acadedbecccbaaeeccdb
  \    ebdacbadabdbbcddceac
   \   dbeceaeeaacceeabecbd
    \  beabcadcadeaedbedcce
 /\/\/ cebeadbacceceeccdaea
 /\/\/ cbddedeabdbcddbbbebd
 /\/\/ eebcbeeddbedcdbddcae
     \ badeaddeaadaaeacdabe
      \ebbedbebdeaebeebaaeb
 /\/\/ bdeedcbaabeacecaeeaa
      /cdeccaebaaacceebbcca
     / eeadabdabacabeaeddce
 /\/\/ debdbbbcbeddbbdecead
    /  bebcdeeacabeabdedcbc
   /   beacbcbaaaaacaabcaee
  /    ceeaebccecaedbcbebbc
 /     dcaabaabedadbddccbab
 /\/\/ eedcbcdcbcebcdaadade
/      cceeddbeaeecececdabb
 /\/\/ ecceccedbebcaaedddcc
\      dcabdabdacaceeaceeeb
 /\/\/ eeeebdecbdaededcecba
 \     aaaaaacccdedcacceecb
 /\/\/ eccebcdddbccdecbdccd
  \    dbbdeddcccabadbedaee
   \   bdedcbaebaeedacdedcb
    \  abebbedaadacaeceebaa
     \ cbaedcecbacbdcbbcbeb
      \dbdcbedacccbaeddbbda
 /\/\/ debbbecdacccbcbecccd
      /ccbbbabbbbbacbbdaaab
     / cecaeabdccaabbbbccba
    /  bcadaeaeccdebcddddca
 /\/\/ dbbbbdacbdcedebaecdc
   /   cdcbeeeaeeaacdaccbbe
  /    ebcdadbdbddaeaaddacb
 /     adcdebdcabebcddcbbeb
 /\/\/ ddcccbcbdecebadbbdca
/      bcbadeebebdccecaedeb