kiff ikff kfif fkif ifkf fikf kiff ikff kfif fkif ifkf fikf kffi fkfi kffi fkfi ffki ffki iffk fifk iffk fifk ffik ffik
Note: these 'words' (valid or invalid) are all the permutations of the word kiff. These words are obtained by scrambling the letters in kiff.