-er -ey eee eeg een eeo eep eer eex eey ege egg egn ego egp egr egx egy en- ene eng enn eno enp enr eny eo- eoe eog eon eoo eop eor ep- epe epg epn epo epp epr epx ere erg ern ero erp err ery ex- exe exo exp exr exx exy eye eyn eyo eyp eyr g-p ge- gee geg gen geo gep ger gex gey ggg ggn ggo ggp ggr gne gnn gno gnp gnr goe gog gon goo gop gor gox goy gpe gpg gpn gpo gpp gpr gpx gre grg grn gro grp grr grx gry gxp gy- gye gyn gyo gyp gyr ne- nee neg nen neo nep ner nex ney nge ngg ngn ngo ngp nne nng nnn nno nnp no- noe nog non noo nop nor nox noy npe npg npn npo npp npr nre nrg nrn nro nrp nrr nrx nry nye nyg nyn nyo nyp nyx nyy oee oeg oen oeo oep oer oex oey oge ogg ogn ogo ogp ogx ogy on- one ong onn ono onp onr onx ony oo- oog oon ooo oop oor oox op- ope opg opn opo opp opr opx opy or- ore org orn oro orp orr orx ory ox- oxn oxo oxx oxy oye oyo p-p pee peg pen peo pep per pex pey pge pgg pgn pgo pgp pgr pgy pn- pne png pnn pno pnp pnr pnx pny poe pog pon poo pop por pox poy ppe ppg ppn ppo ppp ppr ppx pre prg prn pro prp prr prx pry pxe pxg pxr py- pye pyg pyn pyo pyr pyx re- ree reg ren reo rep rer rex rey rge rgg rgn rgo rgp rgr rgx rng rnn rno rnp rnr rny roe rog ron roo rop ror rox roy rpe rpg rpn rpo rpp rpr rpx rrg rrn rrp rrr rxp rxr ry- rye ryg ryn ryo ryr ryy xee xeg xen xep xer xex xge xgp xno xog xon xoo xop xor xox xpe xpg xpn xpo xpp xrx xry xxo xxp xxx xxy xyp xyr xyy yee yeg yen yeo yep yer yex yey ygo yne yng ynn ynp yny yoe yog yon yoo yop yor yox yoy ypg ypo yre yrg yrn yro yrp yxe yxy yye yyg yyy