/\abc
abab
 \     cbbccababbbbcaabacaaaccacacccabacccccbca
 /\/\/ acaabbbabccacacabbbccccabaccbbaabcbcaccb
  \    abbcbcabbcbccbccaabbacacccccabbbbbbbabab
   \   cbcacaabccbaaaccbccaaaacaaccaccaabcababb
    \  bbbacabbaaccaabcccabaacababccccbcbbcacbc
 /\/\/ cbbbcbbacbbcbabccccbbbaaaaabbccaccccbbac
 /\/\/ bbaabaacacbabbacccacaaacbaabccabcccccaab
 /\/\/ bcaaabcbbacabcbbabacbcccbaabaabcccabbacb
 /\/\/ bbabbaccbbaccabbbbcccabbbaaaaabcaccbcaaa
 /\/\/ acbaaabbbacccaaccbaacabbcbbbbcbbcbbacaba
 /\/\/ bcacbbaacbbbacbcbabaccbcbccaaacbcbbabbaa
 /\/\/ cbbcbbbcabaabcaaabcbacaaaaabaccacbacbbba
 /\/\/ babcacbaabbcbcbbccacccbccabacbcabccaaabb
 /\/\/ caacacaaaccbcbbbbbabbbccbbbbbbaacabbabca
     \ cacaccabcacacabcacacaabbabaaabbcaaababac
      \cababacbbcaabccaaabaabcbacccaccbcacacaaa
      /bcaababbbbbcccacbccaacaccabcaaababbccccc
 /\/\/ bcaaabbbacacbccaaabcacabcbbbcabaaabbbccb
 /\/\/ bcaccbcbabcaccbaacbbbbaaaacbabbabacbabaa
 /\/\/ acbcbcacccaaaacacacbbcabcaaaacaacaabacca
     / abcbabccabaacababaccbbcacbacacaccccaabcb
 /\/\/ cbbcaaacccccccaaaccbacbabcbbcbbccbcabcaa
    /  accbabaabaaccaacaababcbccbcbbaccabaacaaa
 /\/\/ cbbabaaabaaccaabcaccabacbaacccbbcccaabac
 /\/\/ aacabcbccbbaccabaacbaacbbbcaccaacccbaaba
   /   abababcabbcaaaccaaacacaabbbcaaaaababcbac
  /    accabccbaccabbcbbabcbbaccbcccbcabacbabab
 /\/\/ caacbbacbacaaaacaccaaaccbaccacbaaaaaaaca
 /\/\/ bcccabccbacbaacbbcacbccacbbccbacccbcbaab
 /     aacccbbabbbbacccccaabcaaacbcababbccacaab