-er -ey c-- ccc cce ccf cco ccr ccs cct ce- cec cee cef ceo cer ces cet cey cfc cfe cff cfo cfr cfs cft co- coc coe cof coo cor cos cot coy crc cre crf cro crr crs crt cry csc cse csf cso csr css cst csy ctc cte ctf cto ctr cts ctt cty cyc cye cyf cyo cyr cys cyt ec- ecc ece ecf eco ecr ecs ect eec eee eef eeo eer ees eet eey ef- efc efe eff efo efr efs eft eo- eoc eoe eof eoo eor eos eot erc ere erf ero err ers ert ery es- esc ese esf eso esr ess est esy etc ete etf eto etr ets ett ety eyc eye eyo eyr eys eyt fcc fce fcf fco fcr fcs fct fcy fec fee fef feo fer fes fet fey ffc ffe fff ffo ffr ffs fft ffy foc foe fof foo for fos fot foy frc fre frf fro frr frs frt fry fsc fse fsf fso fsr fss fst ftc fte ftf fto ftr fts ftt fty fy- fyc fye fyo oc- occ ocf oco ocr ocs oct oec oee oef oeo oer oes oet oey of- ofc ofe off ofo ofr ofs oft oo- ooc oof ooo oor oos oot or- orc ore orf oro orr ors ort ory os- osc ose osf oso osr oss ost ot- otc ote otf oto otr ots ott oye oyo oys rcc rce rcf rco rcr rcs rct re- rec ree ref reo rer res ret rey rfc rfe rff rfo rfr rfs rft roc roe rof roo ror ros rot roy rrc rrf rrr rrs rrt rsc rse rsf rso rsr rss rst rtc rte rtf rto rtr rts rtt rty ry- ryc rye ryf ryo ryr rys ryy scc sce scf sco scr scs sct se- sec see sef seo ser ses set sey sfc sfe sff sfo sfr sfs sft soc soe sof soo sor sos sot soy sr- src sre srf sro srr srs srt sry ss- ssc sse ssf sso ssr sss sst stc ste stf sto str sts stt sty sy- syc sye syr sys syt tcc tce tcf tco tcr tcs tct te- tec tee tef teo ter tes tet tey tfc tfe tff tfo tfr tfs tft to- toc toe tof too tor tos tot toy trc tre trf tro trr trs trt try tsc tse tsf tso tsr tss tst tsy ttc tte ttf tto ttr tts ttt tty tyc tye tyf tyo tyr tys tyt ycc yce ycf yco ycs ycy yec yee yef yeo yer yes yet yey yfc yfe yff yfr yfs yft yoc yoe yof yoo yor yos yot yoy yrc yre yrf yro yrs yrt ysc yse yso ysr yss yst ysy ytc yte ytf yto ytr yts ytt yyc yye yyf yys yyt yyy