thins htins tihns ithns hitns ihtns thnis htnis tnhis nthis hntis nhtis tinhs itnhs tnihs ntihs inths niths hints ihnts hnits nhits inhts nihts thisn htisn tihsn ithsn hitsn ihtsn thsin htsin tshin sthin hstin shtin tishn itshn tsihn stihn isthn sithn histn ihstn hsitn shitn ishtn sihtn thnsi htnsi tnhsi nthsi hntsi nhtsi thsni htsni tshni sthni hstni shtni tnshi ntshi tsnhi stnhi nsthi snthi hnsti nhsti hsnti shnti nshti snhti tinsh itnsh tnish ntish intsh nitsh tisnh itsnh tsinh stinh istnh sitnh tnsih ntsih tsnih stnih nstih sntih insth nisth isnth sinth nsith snith hinst ihnst hnist nhist inhst nihst hisnt ihsnt hsint shint ishnt sihnt hnsit nhsit hsnit shnit nshit snhit insht nisht isnht sinht nsiht sniht
Note: these 'words' (valid or invalid) are all the permutations of the word thins. These words are obtained by scrambling the letters in thins.