waits awits wiats iwats aiwts iawts watis awtis wtais twais atwis tawis witas iwtas wtias twias itwas tiwas aitws iatws atiws taiws itaws tiaws waist awist wiast iwast aiwst iawst wasit awsit wsait swait aswit sawit wisat iwsat wsiat swiat iswat siwat aiswt iaswt asiwt saiwt isawt siawt watsi awtsi wtasi twasi atwsi tawsi wasti awsti wsati swati aswti sawti wtsai twsai wstai swtai tswai stwai atswi taswi astwi satwi tsawi stawi witsa iwtsa wtisa twisa itwsa tiwsa wista iwsta wsita swita iswta siwta wtsia twsia wstia swtia tswia stwia itswa tiswa istwa sitwa tsiwa stiwa aitsw iatsw atisw taisw itasw tiasw aistw iastw asitw saitw isatw siatw atsiw tasiw astiw satiw tsaiw staiw itsaw tisaw istaw sitaw tsiaw stiaw
Note: these 'words' (valid or invalid) are all the permutations of the word waits. These words are obtained by scrambling the letters in waits.