17 24
CADCACB DDADDDAD DDDDD DDCAD BBAD DADDDC DCCDDAB DDDDD DADDD BCCDDDADBAD DDBCB DCDDD DCBDDDDAC BDD DD DDACD DDDADDDDD BADDD BDDB BDBDB DBA DCDDCB DDDD BDBDDDD 
BDABDDD DDDCDACD ADDDD CAAAB ACCD CDDAAC AADDDDD BDDAD CDBBD ABABBDDADBD ACDCD BDDDB DBDDBDDAD ADA BA DDDDD DDDDDDDBA DDDDD BDDD DDCAC ADD BCDADD DDAD DCBDDBD