-er -ey c-- ccc cce ccm cco ccp ccr ce- cec cee cem ceo cep cer cey cmc cme cmm cmo cmp cmr cmy co- coc coe com coo cop cor coy cpc cpe cpm cpo cpp cpr crc cre crm cro crp crr cry cyc cye cym cyo cyp cyr ec- ecc ece ecm eco ecr eec eee eem eeo eep eer eey em- emc eme emm emo emp emr eo- eoc eoe eom eoo eop eor ep- epc epe epm epo epp epr erc ere erm ero erp err ery eyc eye eym eyo eyp eyr m-o m-r mc- mcc mce mcm mco mcp mcr mec mee mem meo mep mer mey mmc mme mmm mmo mmp mmr moc moe mom moo mop mor moy mpc mpe mpm mpo mpp mpr mrc mre mrm mro mrp mrr mry my- myc mye mym myo myr oc- occ ocm oco ocp ocr oec oee oem oeo oep oer oey om- omc ome omm omo omp omr omy oo- ooc oom ooo oop oor op- opc ope opm opo opp opr opy or- orc ore orm oro orp orr ory oye oyo p-p pcc pce pcm pco pcp pcr pec pee pem peo pep per pey pmc pme pmm pmo pmp pmr poc poe pom poo pop por poy ppc ppe ppm ppo ppp ppr prc pre prm pro prp prr pry py- pyc pye pym pyo pyr rcc rce rcm rco rcp rcr re- rec ree rem reo rep rer rey rmc rme rmm rmo rmp rmr roc roe rom roo rop ror roy rpc rpe rpm rpo rpp rpr rrc rrm rrp rrr ry- ryc rye rym ryo ryr ryy ycc yce yco ycp ycy yec yee yem yeo yep yer yey ymc yme ymm ymo yoc yoe yom yoo yop yor yoy ypo yrc yre yro yrp yyc yye yyy