-er c-- ccc cce ccm cco ccp ccr ccs cct ce- cec cee cem ceo cep cer ces cet cmc cme cmm cmo cmp cmr cms cmt co- coc coe com coo cop cor cos cot cpc cpe cpm cpo cpp cpr cps cpt crc cre crm cro crp crr crs crt csc cse csm cso csp csr css cst ctc cte ctm cto ctp ctr cts ctt ec- ecc ece ecm eco ecr ecs ect eec eee eem eeo eep eer ees eet em- emc eme emm emo emp emr ems emt eo- eoc eoe eom eoo eop eor eos eot ep- epc epe epm epo epp epr eps ept erc ere erm ero erp err ers ert es- esc ese esm eso esp esr ess est etc ete etm eto etp etr ets ett m-o m-r mc- mcc mce mcm mco mcp mcr mcs mct mec mee mem meo mep mer mes met mmc mme mmm mmo mmp mmr mms mmt moc moe mom moo mop mor mos mot mpc mpe mpm mpo mpp mpr mps mpt mrc mre mrm mro mrp mrr mrs mrt msc mse msm mso msp msr mss mst mtc mte mtm mto mtp mtr mts mtt oc- occ ocm oco ocp ocr ocs oct oec oee oem oeo oep oer oes oet om- omc ome omm omo omp omr oms omt oo- ooc oom ooo oop oor oos oot op- opc ope opm opo opp opr ops opt or- orc ore orm oro orp orr ors ort os- osc ose osm oso osp osr oss ost ot- otc ote otm oto otp otr ots ott p-p pcc pce pcm pco pcp pcr pcs pct pec pee pem peo pep per pes pet pmc pme pmm pmo pmp pmr pms pmt poc poe pom poo pop por pos pot ppc ppe ppm ppo ppp ppr pps ppt prc pre prm pro prp prr prs prt ps- psc pse psm pso psp psr pss pst pt- ptc pte ptm pto ptp ptr pts ptt rcc rce rcm rco rcp rcr rcs rct re- rec ree rem reo rep rer res ret rmc rme rmm rmo rmp rmr rms rmt roc roe rom roo rop ror ros rot rpc rpe rpm rpo rpp rpr rps rpt rrc rrm rrp rrr rrs rrt rsc rse rsm rso rsp rsr rss rst rtc rte rtm rto rtp rtr rts rtt scc sce scm sco scp scr scs sct se- sec see sem seo sep ser ses set smc sme smm smo smp smr sms smt soc soe som soo sop sor sos sot spc spe spm spo spp spr sps spt sr- src sre srm sro srp srr srs srt ss- ssc sse ssm sso ssp ssr sss sst stc ste stm sto stp str sts stt tcc tce tcm tco tcp tcr tcs tct te- tec tee tem teo tep ter tes tet tmc tme tmm tmo tmp tmr tms tmt to- toc toe tom too top tor tos tot tpc tpe tpm tpo tpp tpr tps tpt trc tre trm tro trp trr trs trt tsc tse tsm tso tsp tsr tss tst ttc tte ttm tto ttp ttr tts ttt