-er -ey c-- ccc cce ccm cco ccr ccv ce- cec cee cem ceo cer cev cey cmc cme cmm cmo cmr cmv cmy co- coc coe com coo cor cov coy crc cre crm cro crr crv cry cvc cve cvm cvo cvr cvv cyc cye cym cyo cyr ec- ecc ece ecm eco ecr ecv eec eee eem eeo eer eev eey em- emc eme emm emo emr emv eo- eoc eoe eom eoo eor erc ere erm ero err erv ery evc eve evm evo evr evv evy eyc eye eym eyo eyr m-o m-r m-v mc- mcc mce mcm mco mcr mcv mec mee mem meo mer mev mey mmc mme mmm mmo mmr mmv moc moe mom moo mor mov moy mrc mre mrm mro mrr mrv mry mvc mve mvm mvo mvr mvv mvy my- myc mye mym myo myr myv oc- occ ocm oco ocr ocv oec oee oem oeo oer oey om- omc ome omm omo omr omv omy oo- ooc oom ooo oor oov or- orc ore orm oro orr orv ory ov- ovc ove ovo ovv oye oyo rcc rce rcm rco rcr rcv re- rec ree rem reo rer rev rey rmc rme rmm rmo rmr rmv roc roe rom roo ror rov roy rrc rrm rrr rvc rve rvm rvo rvr rvv rvy ry- ryc rye rym ryo ryr ryy v-e vcc vce vcm vco vcr vcy vec vee vem veo ver vey vm- vmc vmm vmo vmr voc voe vom voo vor vov voy vrc vre vrm vrr vry vvc vvm vvo vvr vvv vye vym ycc yce yco ycv ycy yec yee yem yeo yer yev yey ymc yme ymm ymo yoc yoe yom yoo yor yoy yrc yre yro yve yvo yvr yvy yyc yye yyy