-ey c-- ccc cce ccf cco ccs cct ce- cec cee cef ceo ces cet cey cfc cfe cff cfo cfs cft co- coc coe cof coo cos cot coy csc cse csf cso css cst csy ctc cte ctf cto cts ctt cty cyc cye cyf cyo cys cyt ec- ecc ece ecf eco ecs ect eec eee eef eeo ees eet eey ef- efc efe eff efo efs eft eo- eoc eoe eof eoo eos eot es- esc ese esf eso ess est esy etc ete etf eto ets ett ety eyc eye eyo eys eyt fcc fce fcf fco fcs fct fcy fec fee fef feo fes fet fey ffc ffe fff ffo ffs fft ffy foc foe fof foo fos fot foy fsc fse fsf fso fss fst ftc fte ftf fto fts ftt fty fy- fyc fye fyo oc- occ ocf oco ocs oct oec oee oef oeo oes oet oey of- ofc ofe off ofo ofs oft oo- ooc oof ooo oos oot os- osc ose osf oso oss ost ot- otc ote otf oto ots ott oye oyo oys scc sce scf sco scs sct se- sec see sef seo ses set sey sfc sfe sff sfo sfs sft soc soe sof soo sos sot soy ss- ssc sse ssf sso sss sst stc ste stf sto sts stt sty sy- syc sye sys syt tcc tce tcf tco tcs tct te- tec tee tef teo tes tet tey tfc tfe tff tfo tfs tft to- toc toe tof too tos tot toy tsc tse tsf tso tss tst tsy ttc tte ttf tto tts ttt tty tyc tye tyf tyo tys tyt ycc yce ycf yco ycs ycy yec yee yef yeo yes yet yey yfc yfe yff yfs yft yoc yoe yof yoo yos yot yoy ysc yse yso yss yst ysy ytc yte ytf yto yts ytt yyc yye yyf yys yyt yyy