-er -ey eee eek een eeo eer eey eke eko ekr eky en- ene enk enn eno enr eny eo- eoe eok eon eoo eor ere erk ern ero err ery eye eyn eyo eyr ke- kee kek ken keo ker key kke kkk kkn kkr kky kn- kne knk knn kno knr koe kok kon koo kor koy krk krn kro krr kry kye kyn kyo kyr ne- nee nek nen neo ner ney nke nkk nkn nko nkr nky nne nnk nnn nno no- noe nok non noo nor noy nre nrk nrn nro nrr nry nye nyk nyn nyo nyy oee oen oeo oer oey oke okk oko okr on- one onk onn ono onr ony oo- ook oon ooo oor or- ore ork orn oro orr ory oye oyo re- ree rek ren reo rer rey rke rkk rko rky rnn rno rnr rny roe rok ron roo ror roy rrk rrn rrr ry- rye ryk ryn ryo ryr ryy yee yek yen yeo yer yey ykk ykn yne ynk ynn yny yoe yok yon yoo yor yoy yre yrn yro yye yyy