-th a-a a-b a-c a-t aaa aab aac aad aah aam aao aat ab- aba abb abc abd abh abm abo abt ac- aca acb acc acd ach acm aco act ad- ada adb adc add adh adm ado adt aha ahb ahc ahd ahh ahm aho aht ama amb amc amd amh amm amo amt aoa aob aoc aod aoh aom aoo aot at- ata atb atc atd ath atm ato att baa bab bac bad bah bam bao bat bba bbb bbc bbd bbh bbm bbo bbt bca bcb bcc bcd bch bcm bco bct bda bdb bdc bdd bdh bdm bdo bdt bha bhb bhc bhd bhh bhm bho bht bma bmb bmc bmd bmh bmm bmo bmt boa bob boc bod boh bom boo bot bta btb btc btd bth btm bto btt c-- caa cab cac cad cah cam cao cat cba cbb cbc cbd cbh cbm cbo cbt cca ccb ccc ccd cch ccm cco cct cda cdb cdc cdd cdh cdm cdo cdt ch- cha chb chc chd chh chm cho cht cma cmb cmc cmd cmh cmm cmo cmt co- coa cob coc cod coh com coo cot cta ctb ctc ctd cth ctm cto ctt daa dab dac dad dah dam dao dat dba dbb dbc dbd dbh dbm dbo dbt dca dcb dcc dcd dcm dco dct dda ddb ddc ddd ddh ddm ddo ddt dh- dha dhb dhc dhd dhh dhm dho dht dma dmb dmc dmd dmh dmm dmo dmt doa dob doc dod doh dom doo dot dta dtb dtc dtd dth dtm dto dtt haa hab hac had hah ham hao hat hba hbb hbc hbd hbh hbm hbo hbt hca hcb hcc hcd hch hcm hco hct hda hdb hdc hdd hdh hdm hdo hdt hha hhb hhc hhd hhh hhm hho hht hma hmb hmc hmd hmh hmm hmo hmt hoa hob hoc hod hoh hom hoo hot hta htb htc htd hth htm hto htt m-o maa mab mac mad mah mam mao mat mba mbb mbc mbd mbh mbm mbo mbt mc- mca mcb mcc mcd mch mcm mco mct mda mdb mdc mdd mdh mdm mdo mdt mha mhc mhd mhh mhm mho mht mma mmb mmc mmd mmh mmm mmo mmt moa mob moc mod moh mom moo mot mta mtb mtc mtd mth mtm mto mtt oaa oab oac oad oah oam oao oat ob- oba obb obc obd obh obm obo obt oc- oca ocb occ ocd och ocm oco oct oda odb odc odd odh odm odo odt oha ohc ohd ohh ohm oho oht om- oma omb omc omd omh omm omo omt oo- ooa oob ooc ood ooh oom ooo oot ot- ota otb otc otd oth otm oto ott taa tab tac tad tah tam tao tat tba tbb tbc tbd tbh tbm tbo tbt tca tcb tcc tcd tch tcm tco tct tda tdb tdc tdd tdh tdm tdo tdt th- tha thb thc thd thh thm tho tht tma tmb tmc tmd tmh tmm tmo tmt to- toa tob toc tod toh tom too tot tta ttb ttc ttd tth ttm tto ttt