-er -ey c-- ccc cce ccm cco ccp ccr ccs ce- cec cee cem ceo cep cer ces cey cmc cme cmm cmo cmp cmr cms cmy co- coc coe com coo cop cor cos coy cpc cpe cpm cpo cpp cpr cps crc cre crm cro crp crr crs cry csc cse csm cso csp csr css csy cyc cye cym cyo cyp cyr cys ec- ecc ece ecm eco ecr ecs eec eee eem eeo eep eer ees eey em- emc eme emm emo emp emr ems eo- eoc eoe eom eoo eop eor eos ep- epc epe epm epo epp epr eps erc ere erm ero erp err ers ery es- esc ese esm eso esp esr ess esy eyc eye eym eyo eyp eyr eys m-o m-r mc- mcc mce mcm mco mcp mcr mcs mec mee mem meo mep mer mes mey mmc mme mmm mmo mmp mmr mms moc moe mom moo mop mor mos moy mpc mpe mpm mpo mpp mpr mps mrc mre mrm mro mrp mrr mrs mry msc mse msm mso msp msr mss msy my- myc mye mym myo myr mys oc- occ ocm oco ocp ocr ocs oec oee oem oeo oep oer oes oey om- omc ome omm omo omp omr oms omy oo- ooc oom ooo oop oor oos op- opc ope opm opo opp opr ops opy or- orc ore orm oro orp orr ors ory os- osc ose osm oso osp osr oss oye oyo oys p-p pcc pce pcm pco pcp pcr pcs pec pee pem peo pep per pes pey pmc pme pmm pmo pmp pmr pms poc poe pom poo pop por pos poy ppc ppe ppm ppo ppp ppr pps prc pre prm pro prp prr prs pry ps- psc pse psm pso psp psr pss psy py- pyc pye pym pyo pyr pys rcc rce rcm rco rcp rcr rcs re- rec ree rem reo rep rer res rey rmc rme rmm rmo rmp rmr rms roc roe rom roo rop ror ros roy rpc rpe rpm rpo rpp rpr rps rrc rrm rrp rrr rrs rsc rse rsm rso rsp rsr rss ry- ryc rye rym ryo ryr rys ryy scc sce scm sco scp scr scs se- sec see sem seo sep ser ses sey smc sme smm smo smp smr sms smy soc soe som soo sop sor sos soy spc spe spm spo spp spr sps spy sr- src sre srm sro srp srr srs sry ss- ssc sse ssm sso ssp ssr sss sy- syc sye sym syp syr sys ycc yce yco ycp ycs ycy yec yee yem yeo yep yer yes yey ymc yme ymm ymo yms yoc yoe yom yoo yop yor yos yoy ypo yps yrc yre yro yrp yrs ysc yse ysm yso ysp ysr yss ysy yyc yye yys yyy