ultin lutin utlin tulin ltuin tluin ulitn luitn uiltn iultn liutn ilutn utiln tuiln uitln iutln tiuln ituln ltiun tliun litun iltun tilun itlun ultni lutni utlni tulni ltuni tluni ulnti lunti unlti nulti lnuti nluti utnli tunli untli nutli tnuli ntuli ltnui tlnui lntui nltui tnlui ntlui ulint luint uilnt iulnt liunt ilunt ulnit lunit unlit nulit lnuit nluit uinlt iunlt unilt nuilt inult niult linut ilnut lniut nliut inlut nilut utinl tuinl uitnl iutnl tiunl itunl utnil tunil until nutil tnuil ntuil uintl iuntl unitl nuitl inutl niutl tinul itnul tniul ntiul intul nitul ltinu tlinu litnu iltnu tilnu itlnu ltniu tlniu lntiu nltiu tnliu ntliu lintu ilntu lnitu nlitu inltu niltu tinlu itnlu tnilu ntilu intlu nitlu
Note: these 'words' (valid or invalid) are all the permutations of the word ultin. These words are obtained by scrambling the letters in ultin.