-er -ey -ic c-- ccc cce cci cck ccr ce- cec cee cei cek cer cey ci- cic cie cii cik cir ckc cki cky crc cre cri crk crr cry cyc cye cyk cyr ec- ecc ece eci eck ecr eec eee eek eer eey eic eie eii eik eir ekc eke eki ekr eky erc ere eri erk err ery eyc eye eyr icc ice ici ick icr icy ie- iec iee iei iek ier iey iic iie iii iir ikc ike iki ikk ikr ir- irc ire iri irk irr iry iyc iye iyr iyy kcc kce kci kck kcr ke- kec kee kei kek ker key kic kie kii kik kir kkc kke kki kkk kkr kky krc kri krk krr kry kyc kye kyr rcc rce rci rcr re- rec ree rei rek rer rey ric rie rii rik rir riy rkc rke rkk rky rrc rri rrk rrr ry- ryc rye ryk ryr ryy ycc yce yci ycy yec yee yei yek yer yey yie yii yir yki ykk yrc yre yyc yye yyy