a-a a-c a-t aaa aac aae aam aap aas aat ac- aca acc ace acm acp acs act aea aec aee aem aep aes aet ama amc ame amm amp ams amt ap- apa apc ape apm app aps apt as- asa asc ase asm asp ass ast at- ata atc ate atm atp ats att c-- caa cac cae cam cap cas cat cca ccc cce ccm ccp ccs cct ce- cea cec cee cem cep ces cet cma cmc cme cmm cmp cms cmt cpa cpc cpe cpm cpp cps cpt csa csc cse csm csp css cst cta ctc cte ctm ctp cts ctt eaa eac eae eam eap eas eat ec- eca ecc ece ecm ecs ect eea eec eee eem eep ees eet em- ema emc eme emm emp ems emt ep- epa epc epe epm epp eps ept es- esa esc ese esm esp ess est eta etc ete etm etp ets ett maa mac mae mam map mas mat mc- mca mcc mce mcm mcp mcs mct mea mec mee mem mep mes met mma mmc mme mmm mmp mms mmt mpa mpc mpe mpm mpp mps mpt msa msc mse msm msp mss mst mta mtc mte mtm mtp mts mtt p-p paa pac pae pam pap pas pat pca pcc pce pcm pcp pcs pct pea pec pee pem pep pes pet pma pmc pme pmm pmp pms pmt ppa ppc ppe ppm ppp pps ppt ps- psa psc pse psm psp pss pst pt- pta ptc pte ptm ptp pts ptt saa sac sae sam sap sas sat sca scc sce scm scp scs sct se- sea sec see sem sep ses set sma smc sme smm smp sms smt spa spc spe spm spp sps spt ss- ssa ssc sse ssm ssp sss sst sta stc ste stm stp sts stt taa tac tae tam tap tas tat tca tcc tce tcm tcp tcs tct te- tea tec tee tem tep tes tet tma tmc tme tmm tmp tms tmt tpa tpc tpe tpm tpp tps tpt tsa tsc tse tsm tsp tss tst tta ttc tte ttm ttp tts ttt