-er -ey -ic c-- ccc cce ccf cci cck ccr ce- cec cee cef cei cek cer cey cfc cfe cff cfi cfk cfr ci- cic cie cif cii cik cir ckc cki cky crc cre crf cri crk crr cry cyc cye cyf cyk cyr ec- ecc ece ecf eci eck ecr eec eee eef eek eer eey ef- efc efe eff efi efr eic eie eif eii eik eir ekc eke ekf eki ekr eky erc ere erf eri erk err ery eyc eye eyr fcc fce fcf fci fck fcr fcy fec fee fef fei fek fer fey ffc ffe fff ffi ffk ffr ffy fic fie fif fii fik fir fkc fkf fki fkk frc fre frf fri frk frr fry fy- fyc fye fyi fyk i-f icc ice icf ici ick icr icy ie- iec iee ief iei iek ier iey ifc ife iff ifi ifr ify iic iie iif iii iir ikc ike ikf iki ikk ikr ir- irc ire irf iri irk irr iry iyc iye iyr iyy kcc kce kci kck kcr ke- kec kee kef kei kek ker key kfc kff kfi kic kie kif kii kik kir kkc kke kki kkk kkr kky krc krf kri krk krr kry kyc kye kyr rcc rce rcf rci rcr re- rec ree ref rei rek rer rey rfc rfe rff rfi rfk rfr ric rie rif rii rik rir riy rkc rke rkf rkk rky rrc rrf rri rrk rrr ry- ryc rye ryf ryk ryr ryy ycc yce ycf yci ycy yec yee yef yei yek yer yey yfc yfe yff yfr yie yif yii yir yki ykk yrc yre yrf yyc yye yyf yyy