tbloo btloo tlboo ltboo bltoo lbtoo tbolo btolo toblo otblo botlo obtlo tlobo ltobo tolbo otlbo lotbo oltbo bloto lboto bolto oblto lobto olbto tbloo btloo tlboo ltboo bltoo lbtoo tbolo btolo toblo otblo botlo obtlo tlobo ltobo tolbo otlbo lotbo oltbo bloto lboto bolto oblto lobto olbto tbool btool tobol otbol botol obtol tbool btool tobol otbol botol obtol toobl otobl toobl otobl ootbl ootbl bootl obotl bootl obotl oobtl oobtl tloob ltoob tolob otlob lotob oltob tloob ltoob tolob otlob lotob oltob toolb otolb toolb otolb ootlb ootlb lootb olotb lootb olotb ooltb ooltb bloot lboot bolot oblot lobot olbot bloot lboot bolot oblot lobot olbot boolt obolt boolt obolt ooblt ooblt loobt olobt loobt olobt oolbt oolbt
Note: these 'words' (valid or invalid) are all the permutations of the word tbloo. These words are obtained by scrambling the letters in tbloo.