blits lbits bilts iblts libts ilbts bltis lbtis btlis tblis ltbis tlbis bitls ibtls btils tbils itbls tibls litbs iltbs ltibs tlibs itlbs tilbs blist lbist bilst iblst libst ilbst blsit lbsit bslit sblit lsbit slbit bislt ibslt bsilt sbilt isblt siblt lisbt ilsbt lsibt slibt islbt silbt bltsi lbtsi btlsi tblsi ltbsi tlbsi blsti lbsti bslti sblti lsbti slbti btsli tbsli bstli sbtli tsbli stbli ltsbi tlsbi lstbi sltbi tslbi stlbi bitsl ibtsl btisl tbisl itbsl tibsl bistl ibstl bsitl sbitl isbtl sibtl btsil tbsil bstil sbtil tsbil stbil itsbl tisbl istbl sitbl tsibl stibl litsb iltsb ltisb tlisb itlsb tilsb listb ilstb lsitb slitb isltb siltb ltsib tlsib lstib sltib tslib stlib itslb tislb istlb sitlb tsilb stilb
Note: these 'words' (valid or invalid) are all the permutations of the word blits. These words are obtained by scrambling the letters in blits.