-er -ey c-- ccc cce ccm cco ccr ce- cec cee cem ceo cer cey cmc cme cmm cmo cmr cmy co- coc coe com coo cor coy crc cre crm cro crr cry cyc cye cym cyo cyr ec- ecc ece ecm eco ecr eec eee eem eeo eer eey em- emc eme emm emo emr eo- eoc eoe eom eoo eor erc ere erm ero err ery eyc eye eym eyo eyr m-o m-r mc- mcc mce mcm mco mcr mec mee mem meo mer mey mmc mme mmm mmo mmr moc moe mom moo mor moy mrc mre mrm mro mrr mry my- myc mye mym myo myr oc- occ ocm oco ocr oec oee oem oeo oer oey om- omc ome omm omo omr omy oo- ooc oom ooo oor or- orc ore orm oro orr ory oye oyo rcc rce rcm rco rcr re- rec ree rem reo rer rey rmc rme rmm rmo rmr roc roe rom roo ror roy rrc rrm rrr ry- ryc rye rym ryo ryr ryy ycc yce yco ycy yec yee yem yeo yer yey ymc yme ymm ymo yoc yoe yom yoo yor yoy yrc yre yro yyc yye yyy