-er -ey c-- ccc cce cco ccp ccr ccs ce- cec cee ceo cep cer ces cey co- coc coe coo cop cor cos coy cpc cpe cpo cpp cpr cps crc cre cro crp crr crs cry csc cse cso csp csr css csy cyc cye cyo cyp cyr cys ec- ecc ece eco ecr ecs eec eee eeo eep eer ees eey eo- eoc eoe eoo eop eor eos ep- epc epe epo epp epr eps erc ere ero erp err ers ery es- esc ese eso esp esr ess esy eyc eye eyo eyp eyr eys oc- occ oco ocp ocr ocs oec oee oeo oep oer oes oey oo- ooc ooo oop oor oos op- opc ope opo opp opr ops opy or- orc ore oro orp orr ors ory os- osc ose oso osp osr oss oye oyo oys p-p pcc pce pco pcp pcr pcs pec pee peo pep per pes pey poc poe poo pop por pos poy ppc ppe ppo ppp ppr pps prc pre pro prp prr prs pry ps- psc pse pso psp psr pss psy py- pyc pye pyo pyr pys rcc rce rco rcp rcr rcs re- rec ree reo rep rer res rey roc roe roo rop ror ros roy rpc rpe rpo rpp rpr rps rrc rrp rrr rrs rsc rse rso rsp rsr rss ry- ryc rye ryo ryr rys ryy scc sce sco scp scr scs se- sec see seo sep ser ses sey soc soe soo sop sor sos soy spc spe spo spp spr sps spy sr- src sre sro srp srr srs sry ss- ssc sse sso ssp ssr sss sy- syc sye syp syr sys ycc yce yco ycp ycs ycy yec yee yeo yep yer yes yey yoc yoe yoo yop yor yos yoy ypo yps yrc yre yro yrp yrs ysc yse yso ysp ysr yss ysy yyc yye yys yyy