a-a a-b aaa aab aad aae aah aam aan ab- aba abb abd abe abh abm abn ad- ada adb add ade adh adm adn aea aeb aed aee aeh aem aen aha ahb ahd ahe ahh ahm ahn ama amb amd ame amh amm amn an- ana anb and ane anh anm ann baa bab bad bae bah bam ban bba bbb bbd bbe bbh bbm bbn bda bdb bdd bde bdh bdm be- bea beb bed bee beh bem ben bha bhb bhd bhe bhh bhm bma bmb bmd bme bmh bmm bmn bna bnb bnd bne bnn daa dab dad dae dah dam dan dba dbb dbd dbe dbh dbm dbn dda ddb ddd dde ddh ddm ddn de- dea deb ded dee deh dem den dh- dha dhb dhd dhe dhh dhm dma dmb dmd dme dmh dmm dmn dna dnb dnd dne dnh dnm dnn eaa eab ead eae eah eam ean eba ebb ebd ebe ebh ebm ebn ed- eda edb edd ede edh edm edn eea eeb eed eee eem een eha ehb ehd ehe ehh ehm ehn em- ema emb emd eme emh emm emn en- ena enb end ene enh enm enn haa hab had hae hah ham han hba hbb hbd hbe hbh hbm hbn hda hdb hdd hde hdh hdm hdn he- hea heb hed hee heh hem hen hha hhb hhd hhe hhh hhm hhn hma hmb hmd hme hmh hmm hna hnb hnd hne hnh hnn maa mab mad mae mah mam man mba mbb mbd mbe mbh mbm mda mdb mdd mde mdh mdm mdn mea meb med mee meh mem men mha mhd mhh mhm mhn mma mmb mmd mme mmh mmm mmn mna mnb mne mnm mnn naa nab nad nae nah nam nan nba nbb nbd nbe nbm nbn nda ndb ndd nde ndh ndm ndn ne- nea neb ned nee neh nem nen nha nhb nhd nhe nhh nhm nhn nma nmb nmd nme nmh nmm nmn nna nnb nne nnh nnm nnn