wink iwnk wnik nwik inwk niwk wikn iwkn wkin kwin ikwn kiwn wnki nwki wkni kwni nkwi knwi inkw nikw iknw kinw nkiw kniw
Note: these 'words' (valid or invalid) are all the permutations of the word wink. These words are obtained by scrambling the letters in wink.