eeee eefe eero eery efeo effy efor eore epee eper epor eppo eppp eppy epro eprp erer eroe eroo erpe erre erro erye eyer eyey eype eyre eyry eyyr feer fefe feff fefo feof fere fero ferr fery feyr ffee ffff ffrr foer fofo foof fopp for- fore foro forr fprf free freo frep frey froe frop frye fyeo fyfe fyre fyry o-eo oere oeye oeyo ofer off- offe offo offr offy ofor ofre ooer ooff oofy oooo oore oory opep oper opo- opor oppo oppy opry opye ore- oreo orer orey orfe orff oro- oroe orof oror oroy orpe orro orry oyee oyer oyre peep peer peff peor pepe pepo per- pere perf pero perp perr pery peyo peyr pfff pffr poer poey poff poof poop poor pop- pope popo popp popy pore poro porr pory poyo poyr pper pppo pppp pprf ppye pre- pree pref prep prey pro- proe prof proo prop pyep pyo- pype pypy pyr- pyre pyro pyry reef reep refe reff refr reof reop repe repo repp repr repy rere rero rery reye rfef roer roey rofe roff rofo roof roop roor rope ropo ropy rore roro rory roye rpoe rpof rrrr ryfe ryff rype ryyf yeep yeer yefe yeff yeof yepe yepp yere yero yerr yery yeye yeyo yeyr yoff yoof yoop yopo yopy yore yoro yory yoye yoyo yrof yyfe yyff yyyy