-er -ey -up eee eef eek eeo eep eer eey ef- efe eff efo efp efr eke ekf eko ekp ekr eku eky eo- eoe eof eok eoo eop eor eou ep- epe epf epo epp epr epu ere erf erk ero erp err eru ery eu- eue euf eup eur eye eyo eyp eyr fee fef fek feo fep fer feu fey ffe fff ffk ffo ffp ffr ffu ffy fkf fkk fkp foe fof fok foo fop for fou foy fpe fpk fpo fpp fpr fpu fpy fre frf frk fro frp frr fru fry fue fuf fuk fuo fup fur fuu fy- fye fyk fyo fyp ke- kee kef kek keo kep ker key kff kfo kfu kke kkk kkp kkr kku kky koe kof kok koo kop kor kou koy kpe kpf kpk kpo kpp kpr kpu krf krk kro krp krr kru kry kue kuk kup kur kuu kuy kye kyo kyp kyr kyu oee oef oeo oep oer oey of- ofe off ofo ofp ofr ofu oke okk oko okp okr oku oo- oof ook ooo oop oor op- ope opf opk opo opp opr opy or- ore orf ork oro orp orr oru ory ou- oue ouf ouk ouo oup our oye oyo p-p pee pef pek peo pep per peu pey pfe pff pfk pfo pfp pfr pfu pfy pke pkf pko pkp pkr pku pky poe pof pok poo pop por pou poy ppe ppf ppk ppo ppp ppr ppu pre prf prk pro prp prr pru pry pue puf puk pup pur puu puy py- pye pyf pyk pyo pyr pyu re- ree ref rek reo rep rer reu rey rfe rff rfk rfo rfp rfr rfu rke rkf rkk rko rkp rku rky roe rof rok roo rop ror rou roy rpe rpf rpk rpo rpp rpr rpu rrf rrk rrp rrr rru rue ruf ruk ruo rup rur ruu ruy ry- rye ryf ryk ryo ryr ryu ryy uee uef uep uer uey ufe uff ufo ufp ufr ufu uke ukf ukk ukp ukr uku uoe uok uoo uop uor up- upe upf upk upo upp upr upu ur- ure urf urk uro urp urr uru ury uue uur uuu uyo uyu yee yef yek yeo yep yer yey yfe yff yfr yfu ykk yoe yof yok yoo yop yor you yoy ypf ypo ypu yre yrf yro yrp yru yue yuk yuo yup yur yuu yuy yye yyf yyu yyy