fizz ifzz fziz zfiz izfz zifz fizz ifzz fziz zfiz izfz zifz fzzi zfzi fzzi zfzi zzfi zzfi izzf zizf izzf zizf zzif zzif
Note: these 'words' (valid or invalid) are all the permutations of the word fizz. These words are obtained by scrambling the letters in fizz.