-er -ey c-- ccc cce ccn cco ccr ce- cec cee cen ceo cer cey cn- cnc cne cnn cno cnr cny co- coc coe con coo cor coy crc cre crn cro crr cry cyc cye cyn cyo cyr ec- ecc ece ecn eco ecr eec eee een eeo eer eey en- enc ene enn eno enr eny eo- eoc eoe eon eoo eor erc ere ern ero err ery eyc eye eyn eyo eyr ncc nce ncn nco ncr ne- nec nee nen neo ner ney nnc nne nnn nno no- noc noe non noo nor noy nrc nre nrn nro nrr nry nyc nye nyn nyo nyy oc- occ ocn oco ocr oec oee oen oeo oer oey on- onc one onn ono onr ony oo- ooc oon ooo oor or- orc ore orn oro orr ory oye oyo rcc rce rcn rco rcr re- rec ree ren reo rer rey rnc rnn rno rnr rny roc roe ron roo ror roy rrc rrn rrr ry- ryc rye ryn ryo ryr ryy ycc yce yco ycy yec yee yen yeo yer yey yne ynn yny yoc yoe yon yoo yor yoy yrc yre yrn yro yyc yye yyy