a-a a-c a-t aaa aac aae aam aao aat ac- aca acc ace acm aco act aea aec aee aem aeo aet ama amc ame amm amo amt aoa aoc aoe aom aoo aot at- ata atc ate atm ato att c-- caa cac cae cam cao cat cca ccc cce ccm cco cct ce- cea cec cee cem ceo cet cma cmc cme cmm cmo cmt co- coa coc coe com coo cot cta ctc cte ctm cto ctt eaa eac eae eam eao eat ec- eca ecc ece ecm eco ect eea eec eee eem eeo eet em- ema emc eme emm emo emt eo- eoa eoc eoe eom eoo eot eta etc ete etm eto ett m-o maa mac mae mam mao mat mc- mca mcc mce mcm mco mct mea mec mee mem meo met mma mmc mme mmm mmo mmt moa moc moe mom moo mot mta mtc mte mtm mto mtt oaa oac oae oam oao oat oc- oca occ ocm oco oct oea oec oee oem oeo oet om- oma omc ome omm omo omt oo- ooa ooc oom ooo oot ot- ota otc ote otm oto ott taa tac tae tam tao tat tca tcc tce tcm tco tct te- tea tec tee tem teo tet tma tmc tme tmm tmo tmt to- toa toc toe tom too tot tta ttc tte ttm tto ttt