30 32
CDDDDBDDDDDDADDDCDDDDDDDCADD ADDCCCACBBDCDDABCDCDBDDCCBDBDD DDDADCDDDDBDDDDDDBDABDDDBDBABD BBDDDDBDDDADDDDDD CDBCDDDDDDBCDADDBACDDDCDADBDDB DCDDDDBACBDDDBDDDDBDABBBCB CAADDDDDDDDDDDADCADDDDDDDCDCB DCDADABADADDABDDDDBDDBDDBDDD BDDDDDDDDDDBDBCDDBCDDCDDDD CDADDBDDABDDDADDDDDBDDDADBDAD DBDDADBBDADDDDADBDDDDDDDBDDDDD BDCDDDDDDDDDAADDDDBDDABDDDDBDD DBBDBBDDDADDADADDD DDDDCDDDDDADBDDDADDDCDDBBCDDDA DDDDABDAADDBDADCCDBBABCBDDDDDD DDBACDCADDDDDDDCDDDDCDDBBAADDD DDCDADDBDDDCDCDDDABDCDDBCDDBBD DCDDDBDBDDDBDDDCDCADBDDDDDDCBD DDDDDDDDADDCABDDADADDDDDDDBDDD ADDDDADBBACBADADDABCDDDDBDBBDC DBDBDDDDDDACBDAAABDBDDCCDB ABDDDADDDBDDDCDDBDDBBDDBBDDDBD ADDDBBADDDCDCACDD DDADBDDDDDAACDDCADDDBDDBDDCBC DDBCDDDDBCDDABDDBBBBDACDADCDDD BDCDDBBADDBDBDDABDDDDCDDACDCAD DDBDDDDDDDDDDADABABDBABADDBBDB DDDDDDBCDBCDACDDDDDCDBDDDADD DDDCDDBDDCCDCDBDBDCDBDBCDADDBD DDDDDADDDADDDCDDDDDDDBCCADCADB DBBBADDBDDBDDDDDDDDDD DDDDDDDDDDDADDDDDDCDDDADDDCDBD 
BBDDADDDBBDCADDBADDBADDDDBDD DDDADDBBDBDDDDCBDADDCDDBDDDDDB BDDDDDBDBDDBDDDDBDDDADDADDADDD DBDDDDBDBDDADADBD DDCDDCDDDDADDDBDDDDDBBDACDDDDD ABDBBDDDDCDDDBDDADBDADADBB ADBDDBDCCDCBDBDBDCDDDDABDDDDB DABADBDDADABBDBCDDDDAADDABCA CCDDBCDDDABADDCDDDDCDADDDD BDBDDADCDDBDBDBCDAADCBBABDDDD CBADDDDBCCCDAADDDDDCCDDDADDDDD DADADBABDDBDDADADDADABDBDDDCAD ADBDDAABDCBDDDCDDD DBDDDDADDDBDDDADDDBCDDAAADCDDC DDDADABDBCDDCACDBBDDADDDDACDBD DDBDDADBDADBADDDDDDBDDDBDBDBDD BDDDDBBDADDBCBDDBDDDDDDBDDDDCD DDDDDADDDDDDDDCDDBDDDDDDAADDDD DDADDDDBDDDDDDDDDDDDBDDDABDDDD DDDADADADADBDDDDBADBBDDADDDDDA DDDDDDDDDADDDBDDDDBDABBADB ABDCDBCDDDDDCBCDDDDDDDBDDCDDBC DAADDDADDDDBBADAC DCBDDDDDDDDDDDDDBDBADCBDDACCB CDCDADDDDCBDDBDDDDDDAABDDBDDDD DDDDDCAADDDBDDBBDDDDDDBDDADABD DCDBDADBBADADDCADDBDDABBDBDBBD DCADBDDDDDDDBDABDDBBDDABADDB DDDDDDDDDDDBDBADDDBBDDADDDDDDD ABDBDDDDDDDBDDBDDDBABADCBDDDDD DDDCDADDDCDADDDDDDDDA BDCBDDCDDBDDDDBBDADDADDBDDDADA