flix lfix filx iflx lifx ilfx flxi lfxi fxli xfli lxfi xlfi fixl ifxl fxil xfil ixfl xifl lixf ilxf lxif xlif ixlf xilf
Note: these 'words' (valid or invalid) are all the permutations of the word flix. These words are obtained by scrambling the letters in flix.