a-a a-b aaa aab aad aae aah aam ab- aba abb abd abe abh abm ad- ada adb add ade adh adm aea aeb aed aee aeh aem aha ahb ahd ahe ahh ahm ama amb amd ame amh amm baa bab bad bae bah bam bba bbb bbd bbe bbh bbm bda bdb bdd bde bdh bdm be- bea beb bed bee beh bem bha bhb bhd bhe bhh bhm bma bmb bmd bme bmh bmm daa dab dad dae dah dam dba dbb dbd dbe dbh dbm dda ddb ddd dde ddh ddm de- dea deb ded dee deh dem dh- dha dhb dhd dhe dhh dhm dma dmb dmd dme dmh dmm eaa eab ead eae eah eam eba ebb ebd ebe ebh ebm ed- eda edb edd ede edh edm eea eeb eed eee eem eha ehb ehd ehe ehh ehm em- ema emb emd eme emh emm haa hab had hae hah ham hba hbb hbd hbe hbh hbm hda hdb hdd hde hdh hdm he- hea heb hed hee heh hem hha hhb hhd hhe hhh hhm hma hmb hmd hme hmh hmm maa mab mad mae mah mam mba mbb mbd mbe mbh mbm mda mdb mdd mde mdh mdm mea meb med mee meh mem mha mhd mhh mhm mma mmb mmd mme mmh mmm