-er -ey eee een eeo eep eer eey en- ene enn eno enp enr eny eo- eoe eon eoo eop eor ep- epe epn epo epp epr ere ern ero erp err ery eye eyn eyo eyp eyr ne- nee nen neo nep ner ney nne nnn nno nnp no- noe non noo nop nor noy npe npn npo npp npr nre nrn nro nrp nrr nry nye nyn nyo nyp nyy oee oen oeo oep oer oey on- one onn ono onp onr ony oo- oon ooo oop oor op- ope opn opo opp opr opy or- ore orn oro orp orr ory oye oyo p-p pee pen peo pep per pey pn- pne pnn pno pnp pnr pny poe pon poo pop por poy ppe ppn ppo ppp ppr pre prn pro prp prr pry py- pye pyn pyo pyr re- ree ren reo rep rer rey rnn rno rnp rnr rny roe ron roo rop ror roy rpe rpn rpo rpp rpr rrn rrp rrr ry- rye ryn ryo ryr ryy yee yen yeo yep yer yey yne ynn ynp yny yoe yon yoo yop yor yoy ypo yre yrn yro yrp yye yyy