tawts atwts twats wtats awtts watts tatws attws ttaws ttaws attws tatws twtas wttas ttwas ttwas wttas twtas awtts watts atwts tawts wtats twats tawst atwst twast wtast awtst watst taswt atswt tsawt stawt astwt satwt twsat wtsat tswat stwat wstat swtat awstt wastt aswtt sawtt wsatt swatt tatsw attsw ttasw ttasw attsw tatsw tastw atstw tsatw statw asttw sattw ttsaw ttsaw tstaw sttaw tstaw sttaw atstw tastw asttw sattw tsatw statw twtsa wttsa ttwsa ttwsa wttsa twtsa twsta wtsta tswta stwta wstta swtta ttswa ttswa tstwa sttwa tstwa sttwa wtsta twsta wstta swtta tswta stwta awtst watst atwst tawst wtast twast awstt wastt aswtt sawtt wsatt swatt atswt taswt astwt satwt tsawt stawt wtsat twsat wstat swtat tswat stwat
Note: these 'words' (valid or invalid) are all the permutations of the word tawts. These words are obtained by scrambling the letters in tawts.