a-a a-b a-z aaa aab aad aam aan aaz ab- aba abb abd abm abn abz ad- ada adb add adm adn adz ama amb amd amm amn amz an- ana anb and anm ann anz az- aza azb azd azm azn azz baa bab bad bam ban baz bba bbb bbd bbm bbn bda bdb bdd bdm bdz bma bmb bmd bmm bmn bmz bna bnb bnd bnn bnz bza bzd bzn bzz daa dab dad dam dan daz dba dbb dbd dbm dbn dbz dda ddb ddd ddm ddn ddz dma dmb dmd dmm dmn dmz dna dnb dnd dnm dnn dnz dza dzb dzd maa mab mad mam man maz mba mbb mbd mbm mda mdb mdd mdm mdn mdz mma mmb mmd mmm mmn mmz mna mnb mnm mnn mnz mza mzb mzm mzn naa nab nad nam nan naz nba nbb nbd nbm nbn nda ndb ndd ndm ndn nma nmb nmd nmm nmn nmz nna nnb nnm nnn nnz nzb nzd nzz zaa zab zad zam zan zaz zbb zbm zdm zma zmb zmd zmm znd znn zzz