lints ilnts lnits nlits inlts nilts litns iltns ltins tlins itlns tilns lntis nltis ltnis tlnis ntlis tnlis intls nitls itnls tinls ntils tnils linst ilnst lnist nlist inlst nilst lisnt ilsnt lsint slint islnt silnt lnsit nlsit lsnit slnit nslit snlit inslt nislt isnlt sinlt nsilt snilt litsn iltsn ltisn tlisn itlsn tilsn listn ilstn lsitn slitn isltn siltn ltsin tlsin lstin sltin tslin stlin itsln tisln istln sitln tsiln stiln lntsi nltsi ltnsi tlnsi ntlsi tnlsi lnsti nlsti lsnti slnti nslti snlti ltsni tlsni lstni sltni tslni stlni ntsli tnsli nstli sntli tsnli stnli intsl nitsl itnsl tinsl ntisl tnisl instl nistl isntl sintl nsitl snitl itsnl tisnl istnl sitnl tsinl stinl ntsil tnsil nstil sntil tsnil stnil
Note: these 'words' (valid or invalid) are all the permutations of the word lints. These words are obtained by scrambling the letters in lints.