eeeee eeler efere effer efuru ekker ekuku ekuru elele ellek ellel eller ellul elulu eluru erere erkel eruke euell euler eurel eurre feele feere felle ferel ferle ferr- ferre feuer feule fleek fleer fleke flere flerk fleuk fleur fluff fluke flure flurr freek freel freer freke frere freur fu-fu fulke fulle fullf furel keefe keele keere kefee kelek kelle kerek kerel kerle kerre klefe klerk kluke kreef kreek kreel kreke krele krell kreuk krull kukel kukle kukur kullu kulul kulur kurek kurku kurlu kurre kuruk leeke leell leere lefeu leffe leful lekel lekeu leleu lelle lerer leuk- leuke lufre luker lukre lulle lulul lurer lurue reefe reere refel refer reffe rekel rekke rekle relee relek relue rere- reree reuel reuer reule ruele ruell ruere ruffe rukel rukke ruler ruule uelfe ufere ukeke ulker ullur ululu uluru urelu urkel urker uuuuu