-th a-a a-b a-c a-t aaa aab aac aah aam aao aat ab- aba abb abc abh abm abo abt ac- aca acb acc ach acm aco act aha ahb ahc ahh ahm aho aht ama amb amc amh amm amo amt aoa aob aoc aoh aom aoo aot at- ata atb atc ath atm ato att baa bab bac bah bam bao bat bba bbb bbc bbh bbm bbo bbt bca bcb bcc bch bcm bco bct bha bhb bhc bhh bhm bho bht bma bmb bmc bmh bmm bmo bmt boa bob boc boh bom boo bot bta btb btc bth btm bto btt c-- caa cab cac cah cam cao cat cba cbb cbc cbh cbm cbo cbt cca ccb ccc cch ccm cco cct ch- cha chb chc chh chm cho cht cma cmb cmc cmh cmm cmo cmt co- coa cob coc coh com coo cot cta ctb ctc cth ctm cto ctt haa hab hac hah ham hao hat hba hbb hbc hbh hbm hbo hbt hca hcb hcc hch hcm hco hct hha hhb hhc hhh hhm hho hht hma hmb hmc hmh hmm hmo hmt hoa hob hoc hoh hom hoo hot hta htb htc hth htm hto htt m-o maa mab mac mah mam mao mat mba mbb mbc mbh mbm mbo mbt mc- mca mcb mcc mch mcm mco mct mha mhc mhh mhm mho mht mma mmb mmc mmh mmm mmo mmt moa mob moc moh mom moo mot mta mtb mtc mth mtm mto mtt oaa oab oac oah oam oao oat ob- oba obb obc obh obm obo obt oc- oca ocb occ och ocm oco oct oha ohc ohh ohm oho oht om- oma omb omc omh omm omo omt oo- ooa oob ooc ooh oom ooo oot ot- ota otb otc oth otm oto ott taa tab tac tah tam tao tat tba tbb tbc tbh tbm tbo tbt tca tcb tcc tch tcm tco tct th- tha thb thc thh thm tho tht tma tmb tmc tmh tmm tmo tmt to- toa tob toc toh tom too tot tta ttb ttc tth ttm tto ttt