tllab ltlab tllab ltlab lltab lltab tlalb ltalb tallb atllb latlb altlb tlalb ltalb tallb atllb latlb altlb llatb llatb laltb alltb laltb alltb tllba ltlba tllba ltlba lltba lltba tlbla ltbla tblla btlla lbtla bltla tlbla ltbla tblla btlla lbtla bltla llbta llbta lblta bllta lblta bllta tlabl ltabl talbl atlbl latbl altbl tlbal ltbal tblal btlal lbtal bltal tabll atbll tball btall abtll batll labtl albtl lbatl blatl abltl baltl tlabl ltabl talbl atlbl latbl altbl tlbal ltbal tblal btlal lbtal bltal tabll atbll tball btall abtll batll labtl albtl lbatl blatl abltl baltl llabt llabt lalbt allbt lalbt allbt llbat llbat lblat bllat lblat bllat lablt alblt lbalt blalt abllt ballt lablt alblt lbalt blalt abllt ballt
Note: these 'words' (valid or invalid) are all the permutations of the word tllab. These words are obtained by scrambling the letters in tllab.