inxy nixy ixny xiny nxiy xniy inyx niyx iynx yinx nyix ynix ixyn xiyn iyxn yixn xyin yxin nxyi xnyi nyxi ynxi xyni yxni
Note: these 'words' (valid or invalid) are all the permutations of the word inxy. These words are obtained by scrambling the letters in inxy.