rence ernce rnece nrece enrce nerce recne ercne rcene crene ecrne cerne rncee nrcee rcnee crnee ncree cnree encre necre ecnre cenre ncere cnere renec ernec rneec nreec enrec nerec reenc erenc reenc erenc eernc eernc rneec nreec renec ernec nerec enrec enerc neerc eenrc eenrc neerc enerc recen ercen rceen creen ecren ceren reecn erecn reecn erecn eercn eercn rceen creen recen ercen ceren ecren ecern ceern eecrn eecrn ceern ecern rncee nrcee rcnee crnee ncree cnree rnece nrece rence ernce nerce enrce rcene crene recne ercne cerne ecrne ncere cnere necre encre cenre ecnre encer necer ecner cener nceer cneer enecr neecr eencr eencr neecr enecr ecenr ceenr eecnr eecnr ceenr ecenr nceer cneer necer encer cener ecner
Note: these 'words' (valid or invalid) are all the permutations of the word rence. These words are obtained by scrambling the letters in rence.