poxn opxn pxon xpon oxpn xopn ponx opnx pnox npox onpx nopx pxno xpno pnxo npxo xnpo nxpo oxnp xonp onxp noxp xnop nxop
Note: these 'words' (valid or invalid) are all the permutations of the word poxn. These words are obtained by scrambling the letters in poxn.