-er -ey c-- ccc cce cco ccr cct ce- cec cee ceo cer cet cey co- coc coe coo cor cot coy crc cre cro crr crt cry ctc cte cto ctr ctt cty cyc cye cyo cyr cyt ec- ecc ece eco ecr ect eec eee eeo eer eet eey eo- eoc eoe eoo eor eot erc ere ero err ert ery etc ete eto etr ett ety eyc eye eyo eyr eyt oc- occ oco ocr oct oec oee oeo oer oet oey oo- ooc ooo oor oot or- orc ore oro orr ort ory ot- otc ote oto otr ott oye oyo rcc rce rco rcr rct re- rec ree reo rer ret rey roc roe roo ror rot roy rrc rrr rrt rtc rte rto rtr rtt rty ry- ryc rye ryo ryr ryy tcc tce tco tcr tct te- tec tee teo ter tet tey to- toc toe too tor tot toy trc tre tro trr trt try ttc tte tto ttr ttt tty tyc tye tyo tyr tyt ycc yce yco ycy yec yee yeo yer yet yey yoc yoe yoo yor yot yoy yrc yre yro yrt ytc yte yto ytr ytt yyc yye yyt yyy