-er -ey c-- ccc cce ccm cco ccr ccs ce- cec cee cem ceo cer ces cey cmc cme cmm cmo cmr cms cmy co- coc coe com coo cor cos coy crc cre crm cro crr crs cry csc cse csm cso csr css csy cyc cye cym cyo cyr cys ec- ecc ece ecm eco ecr ecs eec eee eem eeo eer ees eey em- emc eme emm emo emr ems eo- eoc eoe eom eoo eor eos erc ere erm ero err ers ery es- esc ese esm eso esr ess esy eyc eye eym eyo eyr eys m-o m-r mc- mcc mce mcm mco mcr mcs mec mee mem meo mer mes mey mmc mme mmm mmo mmr mms moc moe mom moo mor mos moy mrc mre mrm mro mrr mrs mry msc mse msm mso msr mss msy my- myc mye mym myo myr mys oc- occ ocm oco ocr ocs oec oee oem oeo oer oes oey om- omc ome omm omo omr oms omy oo- ooc oom ooo oor oos or- orc ore orm oro orr ors ory os- osc ose osm oso osr oss oye oyo oys rcc rce rcm rco rcr rcs re- rec ree rem reo rer res rey rmc rme rmm rmo rmr rms roc roe rom roo ror ros roy rrc rrm rrr rrs rsc rse rsm rso rsr rss ry- ryc rye rym ryo ryr rys ryy scc sce scm sco scr scs se- sec see sem seo ser ses sey smc sme smm smo smr sms smy soc soe som soo sor sos soy sr- src sre srm sro srr srs sry ss- ssc sse ssm sso ssr sss sy- syc sye sym syr sys ycc yce yco ycs ycy yec yee yem yeo yer yes yey ymc yme ymm ymo yms yoc yoe yom yoo yor yos yoy yrc yre yro yrs ysc yse ysm yso ysr yss ysy yyc yye yys yyy