a-a a-b a-q aaa aab aad aaq aas ab- aba abb abd abq abs ad- ada adb add adq ads aqa aqs as- asa asb asd asq ass baa bab bad baq bas bba bbb bbd bbq bbs bda bdb bdd bdq bds bqd bsa bsb bsd bss daa dab dad daq das dba dbb dbd dbq dbs dda ddb ddd ddq dds dqa dqs dsa dsb dsd dsq dss qaa qad qas qba qbd qbq qbs qda qdb qds qqq qsa qsd saa sab sad saq sas sba sbb sbd sbq sbs sda sdb sdd sdq sds sqa sqd sqq sqs ss- ssa ssb ssd ssq sss