nisse insse nsise snise isnse sinse nisse insse nsise snise isnse sinse nssie snsie nssie snsie ssnie ssnie issne sisne issne sisne ssine ssine nises inses nsies snies isnes sines niess iness neiss eniss ienss einss nseis sneis nesis ensis senis esnis isens siens iesns eisns seins esins nises inses nsies snies isnes sines niess iness neiss eniss ienss einss nseis sneis nesis ensis senis esnis isens siens iesns eisns seins esins nssei snsei nssei snsei ssnei ssnei nsesi snesi nessi enssi sensi esnsi nsesi snesi nessi enssi sensi esnsi sseni sseni sesni essni sesni essni issen sisen issen sisen ssien ssien isesn siesn iessn eissn seisn esisn isesn siesn iessn eissn seisn esisn ssein ssein sesin essin sesin essin
Note: these 'words' (valid or invalid) are all the permutations of the word nisse. These words are obtained by scrambling the letters in nisse.