asdtr sadtr adstr dastr sdatr dsatr astdr satdr atsdr tasdr stadr tsadr adtsr datsr atdsr tadsr dtasr tdasr sdtar dstar stdar tsdar dtsar tdsar asdrt sadrt adsrt dasrt sdart dsart asrdt sardt arsdt rasdt sradt rsadt adrst darst ardst radst drast rdast sdrat dsrat srdat rsdat drsat rdsat astrd satrd atsrd tasrd stard tsard asrtd sartd arstd rastd sratd rsatd atrsd tarsd artsd ratsd trasd rtasd strad tsrad srtad rstad trsad rtsad adtrs datrs atdrs tadrs dtars tdars adrts darts ardts radts drats rdats atrds tards artds ratds trads rtads dtras tdras drtas rdtas trdas rtdas sdtra dstra stdra tsdra dtsra tdsra sdrta dsrta srdta rsdta drsta rdsta strda tsrda srtda rstda trsda rtsda dtrsa tdrsa drtsa rdtsa trdsa rtdsa
Note: these 'words' (valid or invalid) are all the permutations of the word asdtr. These words are obtained by scrambling the letters in asdtr.