xynt yxnt xnyt nxyt ynxt nyxt xytn yxtn xtyn txyn ytxn tyxn xnty nxty xtny txny ntxy tnxy yntx nytx ytnx tynx ntyx tnyx
Note: these 'words' (valid or invalid) are all the permutations of the word xynt. These words are obtained by scrambling the letters in xynt.