-er -ey c-- ccc cce ccg cck cco ccr ce- cec cee ceg cek ceo cer cey cgc cge cgg cgo cgr cgy ckc cko cky co- coc coe cog cok coo cor coy crc cre crg crk cro crr cry cyc cye cyg cyk cyo cyr ec- ecc ece ecg eck eco ecr eec eee eeg eek eeo eer eey egc ege egg ego egr egy ekc eke ekg eko ekr eky eo- eoc eoe eog eok eoo eor erc ere erg erk ero err ery eyc eye eyo eyr gcc gce gcg gck gco gcr ge- gec gee geg gek geo ger gey ggc ggg ggo ggr gko goc goe gog gok goo gor goy grc gre grg grk gro grr gry gy- gye gyo gyr kcc kce kcg kck kcr ke- kec kee keg kek keo ker key kgc kgo kgy kkc kke kkk kkr kky koc koe kog kok koo kor koy krc krg krk kro krr kry kyc kye kyo kyr oc- occ ocg ock oco ocr oec oee oeg oeo oer oey ogc oge ogg ogo ogy okc oke okg okk oko okr oo- ooc oog ook ooo oor or- orc ore org ork oro orr ory oye oyo rcc rce rcg rco rcr re- rec ree reg rek reo rer rey rgc rge rgg rgk rgo rgr rkc rke rkg rkk rko rky roc roe rog rok roo ror roy rrc rrg rrk rrr ry- ryc rye ryg ryk ryo ryr ryy ycc yce yco ycy yec yee yeg yek yeo yer yey ygc ygo ykk yoc yoe yog yok yoo yor yoy yrc yre yrg yro yyc yye yyg yyy