-er a-a a-c a-t aaa aac aae aam aap aar aas aat ac- aca acc ace acm acp acr acs act aea aec aee aem aep aer aes aet ama amc ame amm amp amr ams amt ap- apa apc ape apm app apr aps apt ar- ara arc are arm arp arr ars art as- asa asc ase asm asp asr ass ast at- ata atc ate atm atp atr ats att c-- caa cac cae cam cap car cas cat cca ccc cce ccm ccp ccr ccs cct ce- cea cec cee cem cep cer ces cet cma cmc cme cmm cmp cmr cms cmt cpa cpc cpe cpm cpp cpr cps cpt cra crc cre crm crp crr crs crt csa csc cse csm csp csr css cst cta ctc cte ctm ctp ctr cts ctt eaa eac eae eam eap ear eas eat ec- eca ecc ece ecm ecr ecs ect eea eec eee eem eep eer ees eet em- ema emc eme emm emp emr ems emt ep- epa epc epe epm epp epr eps ept era erc ere erm erp err ers ert es- esa esc ese esm esp esr ess est eta etc ete etm etp etr ets ett m-r maa mac mae mam map mar mas mat mc- mca mcc mce mcm mcp mcr mcs mct mea mec mee mem mep mer mes met mma mmc mme mmm mmp mmr mms mmt mpa mpc mpe mpm mpp mpr mps mpt mra mrc mre mrm mrp mrr mrs mrt msa msc mse msm msp msr mss mst mta mtc mte mtm mtp mtr mts mtt p-p paa pac pae pam pap par pas pat pca pcc pce pcm pcp pcr pcs pct pea pec pee pem pep per pes pet pma pmc pme pmm pmp pmr pms pmt ppa ppc ppe ppm ppp ppr pps ppt pra prc pre prm prp prr prs prt ps- psa psc pse psm psp psr pss pst pt- pta ptc pte ptm ptp ptr pts ptt ra- raa rac rae ram rap rar ras rat rca rcc rce rcm rcp rcr rcs rct re- rea rec ree rem rep rer res ret rma rmc rme rmm rmp rmr rms rmt rpa rpc rpe rpm rpp rpr rps rpt rra rrc rrm rrp rrr rrs rrt rsa rsc rse rsm rsp rsr rss rst rta rtc rte rtm rtp rtr rts rtt saa sac sae sam sap sar sas sat sca scc sce scm scp scr scs sct se- sea sec see sem sep ser ses set sma smc sme smm smp smr sms smt spa spc spe spm spp spr sps spt sr- sra src sre srm srp srr srs srt ss- ssa ssc sse ssm ssp ssr sss sst sta stc ste stm stp str sts stt taa tac tae tam tap tar tas tat tca tcc tce tcm tcp tcr tcs tct te- tea tec tee tem tep ter tes tet tma tmc tme tmm tmp tmr tms tmt tpa tpc tpe tpm tpp tpr tps tpt tra trc tre trm trp trr trs trt tsa tsc tse tsm tsp tsr tss tst tta ttc tte ttm ttp ttr tts ttt