-ey c-- ccc cce cco ccs cct ce- cec cee ceo ces cet cey co- coc coe coo cos cot coy csc cse cso css cst csy ctc cte cto cts ctt cty cyc cye cyo cys cyt ec- ecc ece eco ecs ect eec eee eeo ees eet eey eo- eoc eoe eoo eos eot es- esc ese eso ess est esy etc ete eto ets ett ety eyc eye eyo eys eyt oc- occ oco ocs oct oec oee oeo oes oet oey oo- ooc ooo oos oot os- osc ose oso oss ost ot- otc ote oto ots ott oye oyo oys scc sce sco scs sct se- sec see seo ses set sey soc soe soo sos sot soy ss- ssc sse sso sss sst stc ste sto sts stt sty sy- syc sye sys syt tcc tce tco tcs tct te- tec tee teo tes tet tey to- toc toe too tos tot toy tsc tse tso tss tst tsy ttc tte tto tts ttt tty tyc tye tyo tys tyt ycc yce yco ycs ycy yec yee yeo yes yet yey yoc yoe yoo yos yot yoy ysc yse yso yss yst ysy ytc yte yto yts ytt yyc yye yys yyt yyy