-er -ey c-- ccc cce ccm cco ccr cct ce- cec cee cem ceo cer cet cey cmc cme cmm cmo cmr cmt cmy co- coc coe com coo cor cot coy crc cre crm cro crr crt cry ctc cte ctm cto ctr ctt cty cyc cye cym cyo cyr cyt ec- ecc ece ecm eco ecr ect eec eee eem eeo eer eet eey em- emc eme emm emo emr emt eo- eoc eoe eom eoo eor eot erc ere erm ero err ert ery etc ete etm eto etr ett ety eyc eye eym eyo eyr eyt m-o m-r mc- mcc mce mcm mco mcr mct mec mee mem meo mer met mey mmc mme mmm mmo mmr mmt moc moe mom moo mor mot moy mrc mre mrm mro mrr mrt mry mtc mte mtm mto mtr mtt my- myc mye mym myo myr myt oc- occ ocm oco ocr oct oec oee oem oeo oer oet oey om- omc ome omm omo omr omt omy oo- ooc oom ooo oor oot or- orc ore orm oro orr ort ory ot- otc ote otm oto otr ott oye oyo rcc rce rcm rco rcr rct re- rec ree rem reo rer ret rey rmc rme rmm rmo rmr rmt roc roe rom roo ror rot roy rrc rrm rrr rrt rtc rte rtm rto rtr rtt rty ry- ryc rye rym ryo ryr ryy tcc tce tcm tco tcr tct te- tec tee tem teo ter tet tey tmc tme tmm tmo tmr tmt tmy to- toc toe tom too tor tot toy trc tre trm tro trr trt try ttc tte ttm tto ttr ttt tty tyc tye tym tyo tyr tyt ycc yce yco ycy yec yee yem yeo yer yet yey ymc yme ymm ymo ymt yoc yoe yom yoo yor yot yoy yrc yre yro yrt ytc yte ytm yto ytr ytt yyc yye yyt yyy