eeeee eepee efere effer efuru ekker ekuku ekuru epuku epure erere eruke eurre feere ferr- ferre feuer freek freep freer freke frere freur fu-fu k-p-r keefe keepe keere kefee keppe kerek kerep kerre kreef kreek kreep kreke krepe kreuk krupp kukup kukur kuper kuppe kupur kurek kurku kurre kuruk kurup p-rep peeke peere pekre pepee peppe pepup perer perke perre perur peure pre-k preef preff preke preuk puker puppe puree purer purku purre re-up reefe reepe reere refer reffe rekke reppe rere- reree reuer rperf ruere ruffe rukke rupee ruper ufere ukeep ukeke upper urker urpek urupe uuuuu