-th a-a a-b a-t aaa aab aad aah aam aao aat ab- aba abb abd abh abm abo abt ad- ada adb add adh adm ado adt aha ahb ahd ahh ahm aho aht ama amb amd amh amm amo amt aoa aob aod aoh aom aoo aot at- ata atb atd ath atm ato att baa bab bad bah bam bao bat bba bbb bbd bbh bbm bbo bbt bda bdb bdd bdh bdm bdo bdt bha bhb bhd bhh bhm bho bht bma bmb bmd bmh bmm bmo bmt boa bob bod boh bom boo bot bta btb btd bth btm bto btt daa dab dad dah dam dao dat dba dbb dbd dbh dbm dbo dbt dda ddb ddd ddh ddm ddo ddt dh- dha dhb dhd dhh dhm dho dht dma dmb dmd dmh dmm dmo dmt doa dob dod doh dom doo dot dta dtb dtd dth dtm dto dtt haa hab had hah ham hao hat hba hbb hbd hbh hbm hbo hbt hda hdb hdd hdh hdm hdo hdt hha hhb hhd hhh hhm hho hht hma hmb hmd hmh hmm hmo hmt hoa hob hod hoh hom hoo hot hta htb htd hth htm hto htt m-o maa mab mad mah mam mao mat mba mbb mbd mbh mbm mbo mbt mda mdb mdd mdh mdm mdo mdt mha mhd mhh mhm mho mht mma mmb mmd mmh mmm mmo mmt moa mob mod moh mom moo mot mta mtb mtd mth mtm mto mtt oaa oab oad oah oam oao oat ob- oba obb obd obh obm obo obt oda odb odd odh odm odo odt oha ohd ohh ohm oho oht om- oma omb omd omh omm omo omt oo- ooa oob ood ooh oom ooo oot ot- ota otb otd oth otm oto ott taa tab tad tah tam tao tat tba tbb tbd tbh tbm tbo tbt tda tdb tdd tdh tdm tdo tdt th- tha thb thd thh thm tho tht tma tmb tmd tmh tmm tmo tmt to- toa tob tod toh tom too tot tta ttb ttd tth ttm tto ttt