eeeee eepee eerie efere eferi effer effie efrei eipri eirie eppie erere erier eriff erixx exper feere feier ferie ferr- ferre ferri fexpr ffxii fieee fieri fifer fifie firee firei firer firie firre fixer fixie freei freep freer freex freir frere frier fripp frixe ieiri iepe ieper ierei if-- ifere iiiee iiiii iperf ippee ippei iprex irpex irrep p-rep peere peeri peire peixe pepee peppe peppi perer peri- perie perre perri pexip piere pieri piiri piper pipex pippi pipri pirex pirie pirix pirre pirri pixie ppxii preef preff preie preif prief prier prife reefe reepe reere refer reffe refix reiff reppe rere- reree rerip rerir rexer ri-fi riefe rifer riife riper rippe ririe rperf rripe xerif xexex xfire xxiii xxxii xxxix