a-a a-b aaa aab aad aah aam aao ab- aba abb abd abh abm abo ad- ada adb add adh adm ado aha ahb ahd ahh ahm aho ama amb amd amh amm amo aoa aob aod aoh aom aoo baa bab bad bah bam bao bba bbb bbd bbh bbm bbo bda bdb bdd bdh bdm bdo bha bhb bhd bhh bhm bho bma bmb bmd bmh bmm bmo boa bob bod boh bom boo daa dab dad dah dam dao dba dbb dbd dbh dbm dbo dda ddb ddd ddh ddm ddo dh- dha dhb dhd dhh dhm dho dma dmb dmd dmh dmm dmo doa dob dod doh dom doo haa hab had hah ham hao hba hbb hbd hbh hbm hbo hda hdb hdd hdh hdm hdo hha hhb hhd hhh hhm hho hma hmb hmd hmh hmm hmo hoa hob hod hoh hom hoo m-o maa mab mad mah mam mao mba mbb mbd mbh mbm mbo mda mdb mdd mdh mdm mdo mha mhd mhh mhm mho mma mmb mmd mmh mmm mmo moa mob mod moh mom moo oaa oab oad oah oam oao ob- oba obb obd obh obm obo oda odb odd odh odm odo oha ohd ohh ohm oho om- oma omb omd omh omm omo oo- ooa oob ood ooh oom ooo