epirn peirn eiprn ieprn piern ipern eprin perin erpin repin prein rpein eirpn ierpn eripn reipn irepn riepn piren ipren prien rpien irpen ripen epinr peinr eipnr iepnr pienr ipenr epnir penir enpir nepir pneir npeir einpr ienpr enipr neipr inepr niepr piner ipner pnier npier inper niper eprni perni erpni repni preni rpeni epnri penri enpri nepri pneri nperi ernpi renpi enrpi nerpi rnepi nrepi prnei rpnei pnrei nprei rnpei nrpei eirnp iernp erinp reinp irenp rienp einrp ienrp enirp neirp inerp nierp ernip renip enrip nerip rneip nreip irnep rinep inrep nirep rniep nriep pirne iprne prine rpine irpne ripne pinre ipnre pnire npire inpre nipre prnie rpnie pnrie nprie rnpie nrpie irnpe rinpe inrpe nirpe rnipe nripe
Note: these 'words' (valid or invalid) are all the permutations of the word epirn. These words are obtained by scrambling the letters in epirn.