esxo sexo exso xeso sxeo xseo esox seox eosx oesx soex osex exos xeos eoxs oexs xoes oxes sxoe xsoe soxe osxe xose oxse
Note: these 'words' (valid or invalid) are all the permutations of the word esxo. These words are obtained by scrambling the letters in esxo.