eeeee eepee eerie eevee eever efere eferi effer effie efrei eipri eirie eppie erere ereve erier eriff ervie evere everi everr eveve feere feier ferie ferr- ferre ferri fever fevre fieee fieri fifer fifie firee firei firer firie firre fiver freei freep freer freir frere frier fripp ieiri iepe ieper ierei iever if-- ifere ifive iiiee iiiii iperf ippee ippei irrep ivver p-rep peere peeri peeve peire pepee peppe peppi perer peri- perie perre perri perve piere pieri pieve piiri piper pippi pipri pirie pirre pirri pivie preef preff preie preif preve prief prier prife prive reefe reepe reere reeve refer reffe reiff reive reppe rere- reree rerip rerir revep rever revie revir ri-fi riefe rieve rifer riife riper rippe ririe river rperf rripe rvivr veere veeri veeve veire veive veper verie verre verri verve vever vieri viiri viper virei virii virre virve viver vivi- vivir vivre