-er a-a a-c a-t aaa aac aae aak aam aao aap aar aat ac- aca acc ace ack acm aco acp acr act aea aec aee aek aem aeo aep aer aet aka akc ake akk akm ako akp akr ama amc ame amk amm amo amp amr amt aoa aoc aoe aok aom aoo aop aor aot ap- apa apc ape apk apm apo app apr apt ar- ara arc are ark arm aro arp arr art at- ata atc ate atm ato atp atr att c-- caa cac cae cak cam cao cap car cat cca ccc cce cck ccm cco ccp ccr cct ce- cea cec cee cek cem ceo cep cer cet cka ckc ckm cko ckt cma cmc cme cmk cmm cmo cmp cmr cmt co- coa coc coe cok com coo cop cor cot cpa cpc cpe cpk cpm cpo cpp cpr cpt cra crc cre crk crm cro crp crr crt cta ctc cte ctk ctm cto ctp ctr ctt eaa eac eae eak eam eao eap ear eat ec- eca ecc ece eck ecm eco ecr ect eea eec eee eek eem eeo eep eer eet eka ekc eke eko ekp ekr ekt em- ema emc eme emk emm emo emp emr emt eo- eoa eoc eoe eok eom eoo eop eor eot ep- epa epc epe epm epo epp epr ept era erc ere erk erm ero erp err ert eta etc ete etk etm eto etp etr ett k-t ka- kaa kac kae kak kam kao kap kar kat kca kcc kce kck kcm kcp kcr kct ke- kea kec kee kek kem keo kep ker ket kkc kke kkk kkm kkp kkr kkt kma kmc kme kmk kmm kmo kmp kmt koa koc koe kok kom koo kop kor kot kpa kpc kpe kpk kpm kpo kpp kpr kpt kra krc krk kro krp krr krt kta ktc kte ktk ktm kto ktp ktr ktt m-o m-r maa mac mae mak mam mao map mar mat mc- mca mcc mce mck mcm mco mcp mcr mct mea mec mee mek mem meo mep mer met mka mkc mke mkk mkm mko mkp mkr mkt mma mmc mme mmk mmm mmo mmp mmr mmt moa moc moe mok mom moo mop mor mot mpa mpc mpe mpk mpm mpo mpp mpr mpt mra mrc mre mrk mrm mro mrp mrr mrt mta mtc mte mtk mtm mto mtp mtr mtt oaa oac oae oak oam oao oap oar oat oc- oca occ ock ocm oco ocp ocr oct oea oec oee oem oeo oep oer oet oka okc oke okk oko okp okr om- oma omc ome omm omo omp omr omt oo- ooa ooc ook oom ooo oop oor oot op- opa opc ope opk opm opo opp opr opt or- ora orc ore ork orm oro orp orr ort ot- ota otc ote otk otm oto otp otr ott p-p paa pac pae pak pam pao pap par pat pca pcc pce pck pcm pco pcp pcr pct pea pec pee pek pem peo pep per pet pka pkc pke pkm pko pkp pkr pkt pma pmc pme pmk pmm pmo pmp pmr pmt poa poc poe pok pom poo pop por pot ppa ppc ppe ppk ppm ppo ppp ppr ppt pra prc pre prk prm pro prp prr prt pt- pta ptc pte ptk ptm pto ptp ptr ptt ra- raa rac rae rak ram rao rap rar rat rca rcc rce rcm rco rcp rcr rct re- rea rec ree rek rem reo rep rer ret rkc rke rkk rkm rko rkp rkt rma rmc rme rmm rmo rmp rmr rmt roa roc roe rok rom roo rop ror rot rpa rpc rpe rpk rpm rpo rpp rpr rpt rra rrc rrk rrm rrp rrr rrt rta rtc rte rtk rtm rto rtp rtr rtt taa tac tae tak tam tao tap tar tat tca tcc tce tck tcm tco tcp tcr tct te- tea tec tee tek tem teo tep ter tet tka tkc tke tkk tkm tko tkp tkr tkt tma tmc tme tmk tmm tmo tmp tmr tmt to- toa toc toe tok tom too top tor tot tpa tpc tpe tpk tpm tpo tpp tpr tpt tra trc tre trk trm tro trp trr trt tta ttc tte ttk ttm tto ttp ttr ttt