-er -ey c-- ccc cce cck ccr ce- cec cee cek cer cey ckc cky crc cre crk crr cry cyc cye cyk cyr ec- ecc ece eck ecr eec eee eek eer eey ekc eke ekr eky erc ere erk err ery eyc eye eyr kcc kce kck kcr ke- kec kee kek ker key kkc kke kkk kkr kky krc krk krr kry kyc kye kyr rcc rce rcr re- rec ree rek rer rey rkc rke rkk rky rrc rrk rrr ry- ryc rye ryk ryr ryy ycc yce ycy yec yee yek yer yey ykk yrc yre yyc yye yyy