onyx noyx oynx yonx nyox ynox onxy noxy oxny xony nxoy xnoy oyxn yoxn oxyn xoyn yxon xyon nyxo ynxo nxyo xnyo yxno xyno
Note: these 'words' (valid or invalid) are all the permutations of the word onyx. These words are obtained by scrambling the letters in onyx.