a-a a-c a-t aaa aac aae aam aan aap aas aat ac- aca acc ace acm acn acp acs act aea aec aee aem aen aep aes aet ama amc ame amm amn amp ams amt an- ana anc ane anm ann anp ans ant ap- apa apc ape apm apn app aps apt as- asa asc ase asm asn asp ass ast at- ata atc ate atm atn atp ats att c-- caa cac cae cam can cap cas cat cca ccc cce ccm ccn ccp ccs cct ce- cea cec cee cem cen cep ces cet cma cmc cme cmm cmn cmp cms cmt cn- cna cnc cne cnm cnn cnp cns cnt cpa cpc cpe cpm cpn cpp cps cpt csa csc cse csm csn csp css cst cta ctc cte ctm ctn ctp cts ctt eaa eac eae eam ean eap eas eat ec- eca ecc ece ecm ecn ecs ect eea eec eee eem een eep ees eet em- ema emc eme emm emn emp ems emt en- ena enc ene enm enn enp ens ent ep- epa epc epe epm epn epp eps ept es- esa esc ese esm esn esp ess est eta etc ete etm etn etp ets ett maa mac mae mam man map mas mat mc- mca mcc mce mcm mcn mcp mcs mct mea mec mee mem men mep mes met mma mmc mme mmm mmn mmp mms mmt mna mnc mne mnm mnn mnp mns mnt mpa mpc mpe mpm mpn mpp mps mpt msa msc mse msm msn msp mss mst mta mtc mte mtm mtn mtp mts mtt naa nac nae nam nan nap nas nat nca ncc nce ncm ncn ncp ncs nct ne- nea nec nee nem nen nep nes net nma nmc nme nmm nmn nmp nms nmt nna nnc nne nnm nnn nnp nns nnt npa npc npe npm npn npp nps npt nsa nsc nse nsm nsn nsp nss nst nta ntc nte ntm ntn ntp nts ntt p-p paa pac pae pam pan pap pas pat pca pcc pce pcm pcn pcp pcs pct pea pec pee pem pen pep pes pet pma pmc pme pmm pmn pmp pms pmt pn- pna pnc pne pnm pnn pnp pns pnt ppa ppc ppe ppm ppn ppp pps ppt ps- psa psc pse psm psn psp pss pst pt- pta ptc pte ptm ptn ptp pts ptt saa sac sae sam san sap sas sat sca scc sce scm scn scp scs sct se- sea sec see sem sen sep ses set sma smc sme smm smn smp sms smt sna snc sne snm snn snp sns snt spa spc spe spm spn spp sps spt ss- ssa ssc sse ssm ssn ssp sss sst sta stc ste stm stn stp sts stt taa tac tae tam tan tap tas tat tca tcc tce tcm tcn tcp tcs tct te- tea tec tee tem ten tep tes tet tma tmc tme tmm tmn tmp tms tmt tna tnc tne tnm tnn tnp tns tnt tpa tpc tpe tpm tpn tpp tps tpt tsa tsc tse tsm tsn tsp tss tst tta ttc tte ttm ttn ttp tts ttt