-er -ey c-- ccc cce cco ccp ccr ce- cec cee ceo cep cer cey co- coc coe coo cop cor coy cpc cpe cpo cpp cpr crc cre cro crp crr cry cyc cye cyo cyp cyr ec- ecc ece eco ecr eec eee eeo eep eer eey eo- eoc eoe eoo eop eor ep- epc epe epo epp epr erc ere ero erp err ery eyc eye eyo eyp eyr oc- occ oco ocp ocr oec oee oeo oep oer oey oo- ooc ooo oop oor op- opc ope opo opp opr opy or- orc ore oro orp orr ory oye oyo p-p pcc pce pco pcp pcr pec pee peo pep per pey poc poe poo pop por poy ppc ppe ppo ppp ppr prc pre pro prp prr pry py- pyc pye pyo pyr rcc rce rco rcp rcr re- rec ree reo rep rer rey roc roe roo rop ror roy rpc rpe rpo rpp rpr rrc rrp rrr ry- ryc rye ryo ryr ryy ycc yce yco ycp ycy yec yee yeo yep yer yey yoc yoe yoo yop yor yoy ypo yrc yre yro yrp yyc yye yyy