a-a a-c a-t aaa aac aae aam aao aap aat ac- aca acc ace acm aco acp act aea aec aee aem aeo aep aet ama amc ame amm amo amp amt aoa aoc aoe aom aoo aop aot ap- apa apc ape apm apo app apt at- ata atc ate atm ato atp att c-- caa cac cae cam cao cap cat cca ccc cce ccm cco ccp cct ce- cea cec cee cem ceo cep cet cma cmc cme cmm cmo cmp cmt co- coa coc coe com coo cop cot cpa cpc cpe cpm cpo cpp cpt cta ctc cte ctm cto ctp ctt eaa eac eae eam eao eap eat ec- eca ecc ece ecm eco ect eea eec eee eem eeo eep eet em- ema emc eme emm emo emp emt eo- eoa eoc eoe eom eoo eop eot ep- epa epc epe epm epo epp ept eta etc ete etm eto etp ett m-o maa mac mae mam mao map mat mc- mca mcc mce mcm mco mcp mct mea mec mee mem meo mep met mma mmc mme mmm mmo mmp mmt moa moc moe mom moo mop mot mpa mpc mpe mpm mpo mpp mpt mta mtc mte mtm mto mtp mtt oaa oac oae oam oao oap oat oc- oca occ ocm oco ocp oct oea oec oee oem oeo oep oet om- oma omc ome omm omo omp omt oo- ooa ooc oom ooo oop oot op- opa opc ope opm opo opp opt ot- ota otc ote otm oto otp ott p-p paa pac pae pam pao pap pat pca pcc pce pcm pco pcp pct pea pec pee pem peo pep pet pma pmc pme pmm pmo pmp pmt poa poc poe pom poo pop pot ppa ppc ppe ppm ppo ppp ppt pt- pta ptc pte ptm pto ptp ptt taa tac tae tam tao tap tat tca tcc tce tcm tco tcp tct te- tea tec tee tem teo tep tet tma tmc tme tmm tmo tmp tmt to- toa toc toe tom too top tot tpa tpc tpe tpm tpo tpp tpt tta ttc tte ttm tto ttp ttt