eeeee eepee eerie efere eferi effer effie efrei efuru eipri eirie eppie epure erere erier eriff eurre feere feier ferie ferr- ferre ferri feuer fieee fieri fifer fifie firee firei firer firie firre freei freep freer freir frere freur frier fripp fu-fu furie furir ieiri iepe ieper ierei if-- ifere iiiee iiiii iperf iperu ippee ippei irrep irupi iurie p-rep peere peeri peire pepee peppe peppi pepup perer peri- perie perre perri perur peure piere pieri pieup piiri piper pippi pipri pirie pirre pirri pirui piuri piuru preef preff preie preif prief prier prife pueri puppe pupri puree purer purie purre puuri re-up reefe reepe reere refer reffe reiff reppe rere- reree rerip rerir reuer reuir ri-fi riefe rifer riife riper rippe ripup ririe rirpu riuer rperf rripe ruere ruffe rufi- rufie ruiru rupee ruper rupie ufere uffie upier upper uppie urupe ururi uuuuu