-er -ey c-- ccc cce cco ccr ccs cct ce- cec cee ceo cer ces cet cey co- coc coe coo cor cos cot coy crc cre cro crr crs crt cry csc cse cso csr css cst csy ctc cte cto ctr cts ctt cty cyc cye cyo cyr cys cyt ec- ecc ece eco ecr ecs ect eec eee eeo eer ees eet eey eo- eoc eoe eoo eor eos eot erc ere ero err ers ert ery es- esc ese eso esr ess est esy etc ete eto etr ets ett ety eyc eye eyo eyr eys eyt oc- occ oco ocr ocs oct oec oee oeo oer oes oet oey oo- ooc ooo oor oos oot or- orc ore oro orr ors ort ory os- osc ose oso osr oss ost ot- otc ote oto otr ots ott oye oyo oys rcc rce rco rcr rcs rct re- rec ree reo rer res ret rey roc roe roo ror ros rot roy rrc rrr rrs rrt rsc rse rso rsr rss rst rtc rte rto rtr rts rtt rty ry- ryc rye ryo ryr rys ryy scc sce sco scr scs sct se- sec see seo ser ses set sey soc soe soo sor sos sot soy sr- src sre sro srr srs srt sry ss- ssc sse sso ssr sss sst stc ste sto str sts stt sty sy- syc sye syr sys syt tcc tce tco tcr tcs tct te- tec tee teo ter tes tet tey to- toc toe too tor tos tot toy trc tre tro trr trs trt try tsc tse tso tsr tss tst tsy ttc tte tto ttr tts ttt tty tyc tye tyo tyr tys tyt ycc yce yco ycs ycy yec yee yeo yer yes yet yey yoc yoe yoo yor yos yot yoy yrc yre yro yrs yrt ysc yse yso ysr yss yst ysy ytc yte yto ytr yts ytt yyc yye yys yyt yyy