teels etels teels etels eetls eetls teles etles tlees ltees eltes letes teles etles tlees ltees eltes letes eelts eelts elets leets elets leets teesl etesl teesl etesl eetsl eetsl tesel etsel tseel steel estel setel tesel etsel tseel steel estel setel eestl eestl esetl seetl esetl seetl telse etlse tlese ltese eltse letse tesle etsle tsele stele estle setle tlsee ltsee tslee stlee lstee sltee elste leste eslte selte lsete slete telse etlse tlese ltese eltse letse tesle etsle tsele stele estle setle tlsee ltsee tslee stlee lstee sltee elste leste eslte selte lsete slete eelst eelst elest leest elest leest eeslt eeslt eselt seelt eselt seelt elset leset eslet selet lseet sleet elset leset eslet selet lseet sleet
Note: these 'words' (valid or invalid) are all the permutations of the word teels. These words are obtained by scrambling the letters in teels.