-er -ey c-- ccc cce ccg cco ccr ce- cec cee ceg ceo cer cey cgc cge cgg cgo cgr cgy co- coc coe cog coo cor coy crc cre crg cro crr cry cyc cye cyg cyo cyr ec- ecc ece ecg eco ecr eec eee eeg eeo eer eey egc ege egg ego egr egy eo- eoc eoe eog eoo eor erc ere erg ero err ery eyc eye eyo eyr gcc gce gcg gco gcr ge- gec gee geg geo ger gey ggc ggg ggo ggr goc goe gog goo gor goy grc gre grg gro grr gry gy- gye gyo gyr oc- occ ocg oco ocr oec oee oeg oeo oer oey ogc oge ogg ogo ogy oo- ooc oog ooo oor or- orc ore org oro orr ory oye oyo rcc rce rcg rco rcr re- rec ree reg reo rer rey rgc rge rgg rgo rgr roc roe rog roo ror roy rrc rrg rrr ry- ryc rye ryg ryo ryr ryy ycc yce yco ycy yec yee yeg yeo yer yey ygc ygo yoc yoe yog yoo yor yoy yrc yre yrg yro yyc yye yyg yyy