-er -ey c-- ccc cce ccf cck ccr ccu ce- cec cee cef cek cer ceu cey cfc cfe cff cfk cfr cfu ckc cky crc cre crf crk crr cru cry cuc cue cuf cuk cur cuu cuy cyc cye cyf cyk cyr ec- ecc ece ecf eck ecr ecu eec eee eef eek eer eey ef- efc efe eff efr ekc eke ekf ekr eku eky erc ere erf erk err eru ery eu- euc eue euf eur eyc eye eyr fcc fce fcf fck fcr fcu fcy fec fee fef fek fer feu fey ffc ffe fff ffk ffr ffu ffy fkc fkf fkk frc fre frf frk frr fru fry fue fuf fuk fur fuu fy- fyc fye fyk kcc kce kck kcr kcu ke- kec kee kef kek ker key kfc kff kfu kkc kke kkk kkr kku kky krc krf krk krr kru kry kuc kue kuk kur kuu kuy kyc kye kyr kyu rcc rce rcf rcr rcu re- rec ree ref rek rer reu rey rfc rfe rff rfk rfr rfu rkc rke rkf rkk rku rky rrc rrf rrk rrr rru ruc rue ruf ruk rur ruu ruy ry- ryc rye ryf ryk ryr ryu ryy ucc uce ucf uck ucr ucu uec uee uef uer uey ufc ufe uff ufr ufu ukc uke ukf ukk ukr uku ur- urc ure urf urk urr uru ury uuc uue uur uuu uyc uyu ycc yce ycf ycu ycy yec yee yef yek yer yey yfc yfe yff yfr yfu ykk yrc yre yrf yru yue yuk yur yuu yuy yyc yye yyf yyu yyy