zupan uzpan zpuan pzuan upzan puzan zuapn uzapn zaupn azupn uazpn auzpn zpaun pzaun zapun azpun pazun apzun upazn puazn uapzn aupzn pauzn apuzn zupna uzpna zpuna pzuna upzna puzna zunpa uznpa znupa nzupa unzpa nuzpa zpnua pznua znpua nzpua pnzua npzua upnza punza unpza nupza pnuza npuza zuanp uzanp zaunp azunp uaznp auznp zunap uznap znuap nzuap unzap nuzap zanup aznup znaup nzaup anzup nazup uanzp aunzp unazp nuazp anuzp nauzp zpanu pzanu zapnu azpnu paznu apznu zpnau pznau znpau nzpau pnzau npzau zanpu aznpu znapu nzapu anzpu nazpu panzu apnzu pnazu npazu anpzu napzu upanz puanz uapnz aupnz paunz apunz upnaz punaz unpaz nupaz pnuaz npuaz uanpz aunpz unapz nuapz anupz naupz panuz apnuz pnauz npauz anpuz napuz
Note: these 'words' (valid or invalid) are all the permutations of the word zupan. These words are obtained by scrambling the letters in zupan.