eeeee eener eenie eepee eerie efere eferi effer effie effin efrei efren einen einer einin eipri eirie eirin eixen enfer enfin enfix ennin enper epeen epene epine eppie ereen erere erier eriff erixx ernei ernen ernie exene exine exner exper feere feien feier feine fener fenin fenix fenne fenni fepin feren ferie ferin ferr- ferre ferri fexpr ffxii fieee fieni fieri fifer fifie fiini finer finex finif finne firee firei firen firer firie firre fixen fixer fixie fixin freei freep freer freex frein freir freni frere frier frine fripp frixe i-pin ieiri iepe ieper ierei ierne if-- ifere iffen ifin iiiee iiiii ineni inere ineri infee infer infin infix infre inini inipi inner innie inpen inpex inrix iperf ipini ippee ippei ippen iprex irene irinn irnen irpex irpin irrep n-p-n neere nefen nefer neffe nefre neife nenni neper neppe neree nerii nerre nexen nexin niefe niene niepe niere niiip ninee niner niper nipin nipri nirex nixer nixie p-n-p p-rep peein peene peere peeri peine peire peixe pene- pener penex penii penin penix penne penni penre pepee pepin peppe peppi peren perer peri- perie perin perne perre perri pexip piein pieni piere pieri piiri piner pinin pinn- pinne pinni pinre piper pipex pippi pipri pirex pirie pirin pirix pirne pirni pirre pirri pixen pixie ppxii preef preen preff preie preif prein prene prepn prief prien prier prife prine reefe reene reepe reere refen refer reffe refix refne reiff reine renee rener renfe reni- renie renin renir renix renne renri repen repin reppe rere- reree rerip rerir rexen rexer ri-fi riefe riein rieni rifer riife riner rinex rinne ripen riper ripne rippe ririe rnpep rperf rripe x-fen xenin xenix xerif xexex xfire xinpi xiren xxiii xxxii xxxix