exae xeae eaxe aexe xaee axee exea xeea eexa eexa xeea exea eaex aeex eeax eeax aeex eaex xaee axee xeae exae aexe eaxe
Note: these 'words' (valid or invalid) are all the permutations of the word exae. These words are obtained by scrambling the letters in exae.