a-a a-c a-t aaa aac aae aam aap aat ac- aca acc ace acm acp act aea aec aee aem aep aet ama amc ame amm amp amt ap- apa apc ape apm app apt at- ata atc ate atm atp att c-- caa cac cae cam cap cat cca ccc cce ccm ccp cct ce- cea cec cee cem cep cet cma cmc cme cmm cmp cmt cpa cpc cpe cpm cpp cpt cta ctc cte ctm ctp ctt eaa eac eae eam eap eat ec- eca ecc ece ecm ect eea eec eee eem eep eet em- ema emc eme emm emp emt ep- epa epc epe epm epp ept eta etc ete etm etp ett maa mac mae mam map mat mc- mca mcc mce mcm mcp mct mea mec mee mem mep met mma mmc mme mmm mmp mmt mpa mpc mpe mpm mpp mpt mta mtc mte mtm mtp mtt p-p paa pac pae pam pap pat pca pcc pce pcm pcp pct pea pec pee pem pep pet pma pmc pme pmm pmp pmt ppa ppc ppe ppm ppp ppt pt- pta ptc pte ptm ptp ptt taa tac tae tam tap tat tca tcc tce tcm tcp tct te- tea tec tee tem tep tet tma tmc tme tmm tmp tmt tpa tpc tpe tpm tpp tpt tta ttc tte ttm ttp ttt