9 23
DDCADDDC DAABB CDBDCCDC DB DAAADDABD CDCBB CA AACADCD A DBBCA ADCAADDD DBCAAACD DDDDBCADC AC BBABCABDD CBACDAC AAABBAADD ABDDBBB CBA DD DBDCCA CDDCDDD ACDBAAABC 
DBCCCCBA DADDD BDBDCBDA DB CCDCDCAAA DDBBA AA DBACAAC A CCCDA DDDBCDAD ABACCAAA CBCACBCCD DB BDBBDABBD DAADACD BBBBCCBCB DDAABAC CAA CB CCCCCA CDDBCAD DABBACCAC