30 50
DDB DB DDC CC C DDB D DDD DDD DDD BB DDD CC DDD DDD CDAADDDDBDDDDDDDDDDDDDDDDDD CB DCC D C DD DDD BB CB BADCCDDDDDDDDDDDDDDDDDDDDDD CC DDD CC DDD DD DC CC DDC BB D BDACDDBDDDDDDDDDDDDDDDDDDDD DDC DDC DD DCC DCC DDD DB DC DD B DD DC DD DDB 
CCA AA AAA BA A CAA C BBB CBB CCC DA BAA AA CBA CCB ADBCCDDDDDDDDDDDDDDDDDDDDDD DA BBB A B CB AAA CA AA DABBCDDDDDDDDDDDDDDDDDDDDDD DB CCA BB BBA BB BB DA BAA AA B BCADDDDADDDDDDDDDDDDDDDDDDD BBB BBA CA BAA BBA CAA CA BA BA A CC AA AA AAA