flux lfux fulx uflx lufx ulfx flxu lfxu fxlu xflu lxfu xlfu fuxl ufxl fxul xful uxfl xufl luxf ulxf lxuf xluf uxlf xulf
Note: these 'words' (valid or invalid) are all the permutations of the word flux. These words are obtained by scrambling the letters in flux.