-ey c-- ccc cce cck ccm cco ce- cec cee cek cem ceo cey ckc ckm cko cky cmc cme cmk cmm cmo cmy co- coc coe cok com coo coy cyc cye cyk cym cyo ec- ecc ece eck ecm eco eec eee eek eem eeo eey ekc eke eko eky em- emc eme emk emm emo eo- eoc eoe eok eom eoo eyc eye eym eyo kcc kce kck kcm ke- kec kee kek kem keo key kkc kke kkk kkm kky kmc kme kmk kmm kmo koc koe kok kom koo koy kyc kye kym kyo m-o mc- mcc mce mck mcm mco mec mee mek mem meo mey mkc mke mkk mkm mko mky mmc mme mmk mmm mmo moc moe mok mom moo moy my- myc mye myk mym myo oc- occ ock ocm oco oec oee oem oeo oey okc oke okk oko om- omc ome omm omo omy oo- ooc ook oom ooo oye oyo ycc yce yco ycy yec yee yek yem yeo yey ykk ykm ymc yme ymm ymo yoc yoe yok yom yoo yoy yyc yye yyy