-er -ey c-- ccc cce ccf cco ccr ccz ce- cec cee cef ceo cer cey cez cfc cfe cff cfo cfr cfz co- coc coe cof coo cor coy coz crc cre crf cro crr cry crz cyc cye cyf cyo cyr cz- czc cze czo ec- ecc ece ecf eco ecr eec eee eef eeo eer eey ef- efc efe eff efo efr eo- eoc eoe eof eoo eor erc ere erf ero err ery erz eyc eye eyo eyr eze ezf ezo ezr ezz fcc fce fcf fco fcr fcy fcz fec fee fef feo fer fey fez ffc ffe fff ffo ffr ffy ffz foc foe fof foo for foy foz frc fre frf fro frr fry fy- fyc fye fyo fyz oc- occ ocf oco ocr ocz oec oee oef oeo oer oey of- ofc ofe off ofo ofr ofz oo- ooc oof ooo oor or- orc ore orf oro orr ory orz oye oyo oze ozo ozz rcc rce rcf rco rcr re- rec ree ref reo rer rey rez rfc rfe rff rfo rfr rfz roc roe rof roo ror roy roz rrc rrf rrr ry- ryc rye ryf ryo ryr ryy ryz rze rzo rzy ycc yce ycf yco ycy yec yee yef yeo yer yey yez yfc yfe yff yfr yoc yoe yof yoo yor yoy yrc yre yrf yro yyc yye yyf yyy yyz yzf yzr yzy zce zco zec zee zef zeo zer zez zfc zfr zfy zo- zoc zoe zof zoo zor zro zzr zzy zzz