a-a a-b aaa aab aad aah aam aan ab- aba abb abd abh abm abn ad- ada adb add adh adm adn aha ahb ahd ahh ahm ahn ama amb amd amh amm amn an- ana anb and anh anm ann baa bab bad bah bam ban bba bbb bbd bbh bbm bbn bda bdb bdd bdh bdm bha bhb bhd bhh bhm bma bmb bmd bmh bmm bmn bna bnb bnd bnn daa dab dad dah dam dan dba dbb dbd dbh dbm dbn dda ddb ddd ddh ddm ddn dh- dha dhb dhd dhh dhm dma dmb dmd dmh dmm dmn dna dnb dnd dnh dnm dnn haa hab had hah ham han hba hbb hbd hbh hbm hbn hda hdb hdd hdh hdm hdn hha hhb hhd hhh hhm hhn hma hmb hmd hmh hmm hna hnb hnd hnh hnn maa mab mad mah mam man mba mbb mbd mbh mbm mda mdb mdd mdh mdm mdn mha mhd mhh mhm mhn mma mmb mmd mmh mmm mmn mna mnb mnm mnn naa nab nad nah nam nan nba nbb nbd nbm nbn nda ndb ndd ndh ndm ndn nha nhb nhd nhh nhm nhn nma nmb nmd nmh nmm nmn nna nnb nnh nnm nnn