-er -ey c-- ccc cce cck ccm ccr ce- cec cee cek cem cer cey ckc ckm cky cmc cme cmk cmm cmr cmy crc cre crk crm crr cry cyc cye cyk cym cyr ec- ecc ece eck ecm ecr eec eee eek eem eer eey ekc eke ekr eky em- emc eme emk emm emr erc ere erk erm err ery eyc eye eym eyr kcc kce kck kcm kcr ke- kec kee kek kem ker key kkc kke kkk kkm kkr kky kmc kme kmk kmm krc krk krr kry kyc kye kym kyr m-r mc- mcc mce mck mcm mcr mec mee mek mem mer mey mkc mke mkk mkm mkr mky mmc mme mmk mmm mmr mrc mre mrk mrm mrr mry my- myc mye myk mym myr rcc rce rcm rcr re- rec ree rek rem rer rey rkc rke rkk rkm rky rmc rme rmm rmr rrc rrk rrm rrr ry- ryc rye ryk rym ryr ryy ycc yce ycy yec yee yek yem yer yey ykk ykm ymc yme ymm yrc yre yyc yye yyy