23 7
DBBAAACAADADAAAABACADAB ADAACAACACCAABBDAACA AAACCBBDCAAACAADA AAAADAAAAACBCAAACCACA CABACAAAAAAAACABADDDCBA AAACCAACAAABDADBCABAAA ACAAAACADABAAAAACCCBAAA 
AAAABAADAACADAACBCACCBC CACCCCCAAADAAAAAAADA CAABAABCADACAAAAC AACAAAAAAAAAAADADACAC AAAAAAAABABCAACAAABADCA AAAAABAACAABABCAAADDDB CADCACAAAAABCDACAAABABC