ninx innx nnix nnix innx ninx nixn inxn nxin xnin ixnn xinn nnxi nnxi nxni xnni nxni xnni inxn nixn ixnn xinn nxin xnin
Note: these 'words' (valid or invalid) are all the permutations of the word ninx. These words are obtained by scrambling the letters in ninx.