-er c-- ccc cce cck ccm cco ccp ccr cct ce- cec cee cek cem ceo cep cer cet ckc ckm cko ckt cmc cme cmk cmm cmo cmp cmr cmt co- coc coe cok com coo cop cor cot cpc cpe cpk cpm cpo cpp cpr cpt crc cre crk crm cro crp crr crt ctc cte ctk ctm cto ctp ctr ctt ec- ecc ece eck ecm eco ecr ect eec eee eek eem eeo eep eer eet ekc eke eko ekp ekr ekt em- emc eme emk emm emo emp emr emt eo- eoc eoe eok eom eoo eop eor eot ep- epc epe epm epo epp epr ept erc ere erk erm ero erp err ert etc ete etk etm eto etp etr ett k-t kcc kce kck kcm kcp kcr kct ke- kec kee kek kem keo kep ker ket kkc kke kkk kkm kkp kkr kkt kmc kme kmk kmm kmo kmp kmt koc koe kok kom koo kop kor kot kpc kpe kpk kpm kpo kpp kpr kpt krc krk kro krp krr krt ktc kte ktk ktm kto ktp ktr ktt m-o m-r mc- mcc mce mck mcm mco mcp mcr mct mec mee mek mem meo mep mer met mkc mke mkk mkm mko mkp mkr mkt mmc mme mmk mmm mmo mmp mmr mmt moc moe mok mom moo mop mor mot mpc mpe mpk mpm mpo mpp mpr mpt mrc mre mrk mrm mro mrp mrr mrt mtc mte mtk mtm mto mtp mtr mtt oc- occ ock ocm oco ocp ocr oct oec oee oem oeo oep oer oet okc oke okk oko okp okr om- omc ome omm omo omp omr omt oo- ooc ook oom ooo oop oor oot op- opc ope opk opm opo opp opr opt or- orc ore ork orm oro orp orr ort ot- otc ote otk otm oto otp otr ott p-p pcc pce pck pcm pco pcp pcr pct pec pee pek pem peo pep per pet pkc pke pkm pko pkp pkr pkt pmc pme pmk pmm pmo pmp pmr pmt poc poe pok pom poo pop por pot ppc ppe ppk ppm ppo ppp ppr ppt prc pre prk prm pro prp prr prt pt- ptc pte ptk ptm pto ptp ptr ptt rcc rce rcm rco rcp rcr rct re- rec ree rek rem reo rep rer ret rkc rke rkk rkm rko rkp rkt rmc rme rmm rmo rmp rmr rmt roc roe rok rom roo rop ror rot rpc rpe rpk rpm rpo rpp rpr rpt rrc rrk rrm rrp rrr rrt rtc rte rtk rtm rto rtp rtr rtt tcc tce tck tcm tco tcp tcr tct te- tec tee tek tem teo tep ter tet tkc tke tkk tkm tko tkp tkr tkt tmc tme tmk tmm tmo tmp tmr tmt to- toc toe tok tom too top tor tot tpc tpe tpk tpm tpo tpp tpr tpt trc tre trk trm tro trp trr trt ttc tte ttk ttm tto ttp ttr ttt