-er -ey c-- ccc cce ccg cck cco ccp ccr ce- cec cee ceg cek ceo cep cer cey cgc cge cgg cgo cgp cgr cgy ckc cko cky co- coc coe cog cok coo cop cor coy cpc cpe cpg cpk cpo cpp cpr crc cre crg crk cro crp crr cry cyc cye cyg cyk cyo cyp cyr ec- ecc ece ecg eck eco ecr eec eee eeg eek eeo eep eer eey egc ege egg ego egp egr egy ekc eke ekg eko ekp ekr eky eo- eoc eoe eog eok eoo eop eor ep- epc epe epg epo epp epr erc ere erg erk ero erp err ery eyc eye eyo eyp eyr g-p gcc gce gcg gck gco gcp gcr ge- gec gee geg gek geo gep ger gey ggc ggg ggo ggp ggr gko gkp goc goe gog gok goo gop gor goy gpc gpe gpg gpk gpo gpp gpr grc gre grg grk gro grp grr gry gy- gye gyo gyp gyr kcc kce kcg kck kcp kcr ke- kec kee keg kek keo kep ker key kgc kgo kgp kgy kkc kke kkk kkp kkr kky koc koe kog kok koo kop kor koy kpc kpe kpk kpo kpp kpr krc krg krk kro krp krr kry kyc kye kyo kyp kyr oc- occ ocg ock oco ocp ocr oec oee oeg oeo oep oer oey ogc oge ogg ogo ogp ogy okc oke okg okk oko okp okr oo- ooc oog ook ooo oop oor op- opc ope opg opk opo opp opr opy or- orc ore org ork oro orp orr ory oye oyo p-p pcc pce pcg pck pco pcp pcr pec pee peg pek peo pep per pey pgc pge pgg pgk pgo pgp pgr pgy pkc pke pkg pko pkp pkr pky poc poe pog pok poo pop por poy ppc ppe ppg ppk ppo ppp ppr prc pre prg prk pro prp prr pry py- pyc pye pyg pyk pyo pyr rcc rce rcg rco rcp rcr re- rec ree reg rek reo rep rer rey rgc rge rgg rgk rgo rgp rgr rkc rke rkg rkk rko rkp rky roc roe rog rok roo rop ror roy rpc rpe rpg rpk rpo rpp rpr rrc rrg rrk rrp rrr ry- ryc rye ryg ryk ryo ryr ryy ycc yce yco ycp ycy yec yee yeg yek yeo yep yer yey ygc ygo ykk yoc yoe yog yok yoo yop yor yoy ypg ypo yrc yre yrg yro yrp yyc yye yyg yyy