duars udars daurs adurs uadrs audrs duras udras druas rduas urdas rudas darus adrus draus rdaus ardus radus uards aurds urads ruads aruds rauds duasr udasr dausr adusr uadsr audsr dusar udsar dsuar sduar usdar sudar dasur adsur dsaur sdaur asdur sadur uasdr ausdr usadr suadr asudr saudr dursa udrsa drusa rdusa urdsa rudsa dusra udsra dsura sdura usdra sudra drsua rdsua dsrua sdrua rsdua srdua ursda rusda usrda surda rsuda sruda darsu adrsu drasu rdasu ardsu radsu dasru adsru dsaru sdaru asdru sadru drsau rdsau dsrau sdrau rsdau srdau arsdu rasdu asrdu sardu rsadu sradu uarsd aursd urasd ruasd arusd rausd uasrd ausrd usard suard asurd saurd ursad rusad usrad surad rsuad sruad arsud rasud asrud sarud rsaud sraud
Note: these 'words' (valid or invalid) are all the permutations of the word duars. These words are obtained by scrambling the letters in duars.