a-a a-b a-q aaa aab aad aam aan aaq ab- aba abb abd abm abn abq ad- ada adb add adm adn adq ama amb amd amm amn amq an- ana anb and anm ann anq aqa aqm aqn baa bab bad bam ban baq bba bbb bbd bbm bbn bbq bda bdb bdd bdm bdq bma bmb bmd bmm bmn bmq bna bnb bnd bnn bqd daa dab dad dam dan daq dba dbb dbd dbm dbn dbq dda ddb ddd ddm ddn ddq dma dmb dmd dmm dmn dna dnb dnd dnm dnn dnq dqa dqn maa mab mad mam man mba mbb mbd mbm mbq mda mdb mdd mdm mdn mdq mma mmb mmd mmm mmn mna mnb mnm mnn mqa mqb naa nab nad nam nan nba nbb nbd nbm nbn nda ndb ndd ndm ndn nma nmb nmd nmm nmn nna nnb nnm nnn qaa qad qam qan qba qbd qbq qda qdb qma qnb qnd qqq