-er -ey c-- ccc cce ccn cco ccp ccr ce- cec cee cen ceo cep cer cey cn- cnc cne cnn cno cnp cnr cny co- coc coe con coo cop cor coy cpc cpe cpn cpo cpp cpr crc cre crn cro crp crr cry cyc cye cyn cyo cyp cyr ec- ecc ece ecn eco ecr eec eee een eeo eep eer eey en- enc ene enn eno enp enr eny eo- eoc eoe eon eoo eop eor ep- epc epe epn epo epp epr erc ere ern ero erp err ery eyc eye eyn eyo eyp eyr ncc nce ncn nco ncp ncr ne- nec nee nen neo nep ner ney nnc nne nnn nno nnp no- noc noe non noo nop nor noy npc npe npn npo npp npr nrc nre nrn nro nrp nrr nry nyc nye nyn nyo nyp nyy oc- occ ocn oco ocp ocr oec oee oen oeo oep oer oey on- onc one onn ono onp onr ony oo- ooc oon ooo oop oor op- opc ope opn opo opp opr opy or- orc ore orn oro orp orr ory oye oyo p-p pcc pce pcn pco pcp pcr pec pee pen peo pep per pey pn- pnc pne pnn pno pnp pnr pny poc poe pon poo pop por poy ppc ppe ppn ppo ppp ppr prc pre prn pro prp prr pry py- pyc pye pyn pyo pyr rcc rce rcn rco rcp rcr re- rec ree ren reo rep rer rey rnc rnn rno rnp rnr rny roc roe ron roo rop ror roy rpc rpe rpn rpo rpp rpr rrc rrn rrp rrr ry- ryc rye ryn ryo ryr ryy ycc yce yco ycp ycy yec yee yen yeo yep yer yey yne ynn ynp yny yoc yoe yon yoo yop yor yoy ypo yrc yre yrn yro yrp yyc yye yyy