-th a-a a-b a-c a-t aaa aab aac aah aam aao aat aax ab- aba abb abc abh abm abo abt abx ac- aca acb acc ach acm aco act acx aha ahb ahc ahh ahm aho aht ahx ama amb amc amh amm amo amt amx aoa aob aoc aoh aom aoo aot aox at- ata atb atc ath atm ato att atx ax- axa axh axm axo axt axx baa bab bac bah bam bao bat bax bba bbb bbc bbh bbm bbo bbt bbx bca bcb bcc bch bcm bco bct bcx bha bhb bhc bhh bhm bho bht bhx bma bmb bmc bmh bmm bmo bmt bmx boa bob boc boh bom boo bot box bta btb btc bth btm bto btt btx bxb bxm bxo bxx c-- caa cab cac cah cam cao cat cax cba cbb cbc cbh cbm cbo cbt cbx cca ccb ccc cch ccm cco cct ccx ch- cha chb chc chh chm cho cht chx cma cmb cmc cmh cmm cmo cmt cmx co- coa cob coc coh com coo cot cox cta ctb ctc cth ctm cto ctt ctx cxc cxh cxo cxt cxx haa hab hac hah ham hao hat hax hba hbb hbc hbh hbm hbo hbt hbx hca hcb hcc hch hcm hco hct hha hhb hhc hhh hhm hho hht hma hmb hmc hmh hmm hmo hmt hmx hoa hob hoc hoh hom hoo hot hox hta htb htc hth htm hto htt htx hxc hxm m-o maa mab mac mah mam mao mat max mba mbb mbc mbh mbm mbo mbt mbx mc- mca mcb mcc mch mcm mco mct mcx mha mhc mhh mhm mho mht mhx mma mmb mmc mmh mmm mmo mmt mmx moa mob moc moh mom moo mot mox mta mtb mtc mth mtm mto mtt mtx mxa mxc oaa oab oac oah oam oao oat oax ob- oba obb obc obh obm obo obt obx oc- oca ocb occ och ocm oco oct ocx oha ohc ohh ohm oho oht om- oma omb omc omh omm omo omt omx oo- ooa oob ooc ooh oom ooo oot oox ot- ota otb otc oth otm oto ott ox- oxa oxb oxc oxo oxt oxx t-x taa tab tac tah tam tao tat tax tba tbb tbc tbh tbm tbo tbt tca tcb tcc tch tcm tco tct tcx th- tha thb thc thh thm tho tht thx tma tmb tmc tmh tmm tmo tmt tmx to- toa tob toc toh tom too tot tox tta ttb ttc tth ttm tto ttt ttx txt xaa xac xam xat xbc xbx xcb xch xcx xht xma xmc xmh xmm xmo xmt xmx xoa xoc xom xoo xot xox xtc xtm xtx xxo xxx