17 39
A CAABBA BB AAA AACAAAA AAAABAAACCB AA A A AAACBABBCAD DABAAAACCAA D ABAAAAAAD DCAADDB CAACAC ADAAA ADAAAABC A A CABACAACAAA AAAAAA AAADADA AAACAA A AAAABDAABAAA CCDAAD AAAAACABB BAAAA BACBABC AACDADADCAA ADCABCA DAAADAAAAABA AAAABBCADADDA BAAABA BAA AAAA BBAAA DABBBBAB ADAADCAC 
C ABABAC AA AAA AACBCAA CBAAAAAAAAA AD A A AAAACACBAAA AAABAAAAAAA A ABAAAADDA AAAABAA AAABBA AAAAA ACAAAAAA B D AACBDDAAABB BAAAAC BAAAAAA BABBAD C CDDCCBAAAABB AAACCA CDABABAAD ADABA BAAAABB CAAAABCBABA AAAACAD CCAAAACABDAC DAAAAADADAAAC ABAACA BAB ACAA AACBA DABDAAAA ABACCAAA