a-a a-b a-q aaa aab aad aao aaq aas ab- aba abb abd abo abq abs ad- ada adb add ado adq ads aoa aob aod aoo aos aqa aqo aqs as- asa asb asd aso asq ass baa bab bad bao baq bas bba bbb bbd bbo bbq bbs bda bdb bdd bdo bdq bds boa bob bod boo boq bos bqd bsa bsb bsd bso bss daa dab dad dao daq das dba dbb dbd dbo dbq dbs dda ddb ddd ddo ddq dds doa dob dod doo doq dos dqa dqs dsa dsb dsd dso dsq dss oaa oab oad oao oaq oas ob- oba obb obd obo obs oda odb odd odo ods oo- ooa oob ood ooo oos oqb oqo os- osa osb osd oso osq oss qaa qad qas qba qbd qbq qbs qda qdb qds qoo qos qqq qsa qsd qso saa sab sad sao saq sas sba sbb sbd sbo sbq sbs sda sdb sdd sdo sdq sds soa sob sod soo soq sos sqa sqd sqq sqs ss- ssa ssb ssd sso ssq sss