a-a a-c a-t aaa aac aae aam aao aap aas aat ac- aca acc ace acm aco acp acs act aea aec aee aem aeo aep aes aet ama amc ame amm amo amp ams amt aoa aoc aoe aom aoo aop aos aot ap- apa apc ape apm apo app aps apt as- asa asc ase asm aso asp ass ast at- ata atc ate atm ato atp ats att c-- caa cac cae cam cao cap cas cat cca ccc cce ccm cco ccp ccs cct ce- cea cec cee cem ceo cep ces cet cma cmc cme cmm cmo cmp cms cmt co- coa coc coe com coo cop cos cot cpa cpc cpe cpm cpo cpp cps cpt csa csc cse csm cso csp css cst cta ctc cte ctm cto ctp cts ctt eaa eac eae eam eao eap eas eat ec- eca ecc ece ecm eco ecs ect eea eec eee eem eeo eep ees eet em- ema emc eme emm emo emp ems emt eo- eoa eoc eoe eom eoo eop eos eot ep- epa epc epe epm epo epp eps ept es- esa esc ese esm eso esp ess est eta etc ete etm eto etp ets ett m-o maa mac mae mam mao map mas mat mc- mca mcc mce mcm mco mcp mcs mct mea mec mee mem meo mep mes met mma mmc mme mmm mmo mmp mms mmt moa moc moe mom moo mop mos mot mpa mpc mpe mpm mpo mpp mps mpt msa msc mse msm mso msp mss mst mta mtc mte mtm mto mtp mts mtt oaa oac oae oam oao oap oas oat oc- oca occ ocm oco ocp ocs oct oea oec oee oem oeo oep oes oet om- oma omc ome omm omo omp oms omt oo- ooa ooc oom ooo oop oos oot op- opa opc ope opm opo opp ops opt os- osa osc ose osm oso osp oss ost ot- ota otc ote otm oto otp ots ott p-p paa pac pae pam pao pap pas pat pca pcc pce pcm pco pcp pcs pct pea pec pee pem peo pep pes pet pma pmc pme pmm pmo pmp pms pmt poa poc poe pom poo pop pos pot ppa ppc ppe ppm ppo ppp pps ppt ps- psa psc pse psm pso psp pss pst pt- pta ptc pte ptm pto ptp pts ptt saa sac sae sam sao sap sas sat sca scc sce scm sco scp scs sct se- sea sec see sem seo sep ses set sma smc sme smm smo smp sms smt soa soc soe som soo sop sos sot spa spc spe spm spo spp sps spt ss- ssa ssc sse ssm sso ssp sss sst sta stc ste stm sto stp sts stt taa tac tae tam tao tap tas tat tca tcc tce tcm tco tcp tcs tct te- tea tec tee tem teo tep tes tet tma tmc tme tmm tmo tmp tms tmt to- toa toc toe tom too top tos tot tpa tpc tpe tpm tpo tpp tps tpt tsa tsc tse tsm tso tsp tss tst tta ttc tte ttm tto ttp tts ttt