yunx uynx ynux nyux unyx nuyx yuxn uyxn yxun xyun uxyn xuyn ynxu nyxu yxnu xynu nxyu xnyu unxy nuxy uxny xuny nxuy xnuy
Note: these 'words' (valid or invalid) are all the permutations of the word yunx. These words are obtained by scrambling the letters in yunx.