naxen anxen nxaen xnaen axnen xanen naexn anexn neaxn enaxn aenxn eanxn nxean xnean nexan enxan xenan exnan axenn xaenn aexnn eaxnn xeann exann naxne anxne nxane xnane axnne xanne nanxe annxe nnaxe nnaxe annxe nanxe nxnae xnnae nnxae nnxae xnnae nxnae axnne xanne anxne naxne xnane nxane naenx anenx neanx enanx aennx eannx nanex annex nnaex nnaex annex nanex nenax ennax nneax nneax ennax nenax aennx eannx anenx naenx enanx neanx nxena xnena nexna enxna xenna exnna nxnea xnnea nnxea nnxea xnnea nxnea nenxa ennxa nnexa nnexa ennxa nenxa xenna exnna xnena nxena enxna nexna axenn xaenn aexnn eaxnn xeann exann axnen xanen anxen naxen xnaen nxaen aenxn eanxn anexn naexn enaxn neaxn xenan exnan xnean nxean enxan nexan
Note: these 'words' (valid or invalid) are all the permutations of the word naxen. These words are obtained by scrambling the letters in naxen.