a-a a-b a-q aaa aab aad aam aaq ab- aba abb abd abm abq ad- ada adb add adm adq ama amb amd amm amq aqa aqm baa bab bad bam baq bba bbb bbd bbm bbq bda bdb bdd bdm bdq bma bmb bmd bmm bmq bqd daa dab dad dam daq dba dbb dbd dbm dbq dda ddb ddd ddm ddq dma dmb dmd dmm dqa maa mab mad mam mba mbb mbd mbm mbq mda mdb mdd mdm mdq mma mmb mmd mmm mqa mqb qaa qad qam qba qbd qbq qda qdb qma qqq