-er a-a a-c a-t aaa aac aae aam aao aap aar aat ac- aca acc ace acm aco acp acr act aea aec aee aem aeo aep aer aet ama amc ame amm amo amp amr amt aoa aoc aoe aom aoo aop aor aot ap- apa apc ape apm apo app apr apt ar- ara arc are arm aro arp arr art at- ata atc ate atm ato atp atr att c-- caa cac cae cam cao cap car cat cca ccc cce ccm cco ccp ccr cct ce- cea cec cee cem ceo cep cer cet cma cmc cme cmm cmo cmp cmr cmt co- coa coc coe com coo cop cor cot cpa cpc cpe cpm cpo cpp cpr cpt cra crc cre crm cro crp crr crt cta ctc cte ctm cto ctp ctr ctt eaa eac eae eam eao eap ear eat ec- eca ecc ece ecm eco ecr ect eea eec eee eem eeo eep eer eet em- ema emc eme emm emo emp emr emt eo- eoa eoc eoe eom eoo eop eor eot ep- epa epc epe epm epo epp epr ept era erc ere erm ero erp err ert eta etc ete etm eto etp etr ett m-o m-r maa mac mae mam mao map mar mat mc- mca mcc mce mcm mco mcp mcr mct mea mec mee mem meo mep mer met mma mmc mme mmm mmo mmp mmr mmt moa moc moe mom moo mop mor mot mpa mpc mpe mpm mpo mpp mpr mpt mra mrc mre mrm mro mrp mrr mrt mta mtc mte mtm mto mtp mtr mtt oaa oac oae oam oao oap oar oat oc- oca occ ocm oco ocp ocr oct oea oec oee oem oeo oep oer oet om- oma omc ome omm omo omp omr omt oo- ooa ooc oom ooo oop oor oot op- opa opc ope opm opo opp opr opt or- ora orc ore orm oro orp orr ort ot- ota otc ote otm oto otp otr ott p-p paa pac pae pam pao pap par pat pca pcc pce pcm pco pcp pcr pct pea pec pee pem peo pep per pet pma pmc pme pmm pmo pmp pmr pmt poa poc poe pom poo pop por pot ppa ppc ppe ppm ppo ppp ppr ppt pra prc pre prm pro prp prr prt pt- pta ptc pte ptm pto ptp ptr ptt ra- raa rac rae ram rao rap rar rat rca rcc rce rcm rco rcp rcr rct re- rea rec ree rem reo rep rer ret rma rmc rme rmm rmo rmp rmr rmt roa roc roe rom roo rop ror rot rpa rpc rpe rpm rpo rpp rpr rpt rra rrc rrm rrp rrr rrt rta rtc rte rtm rto rtp rtr rtt taa tac tae tam tao tap tar tat tca tcc tce tcm tco tcp tcr tct te- tea tec tee tem teo tep ter tet tma tmc tme tmm tmo tmp tmr tmt to- toa toc toe tom too top tor tot tpa tpc tpe tpm tpo tpp tpr tpt tra trc tre trm tro trp trr trt tta ttc tte ttm tto ttp ttr ttt