urial ruial uiral iural riual irual urail ruail uaril auril rauil aruil uiarl iuarl uairl auirl iaurl aiurl riaul iraul raiul ariul iarul airul urila ruila uirla iurla riula irula urlia rulia ulria luria rluia lruia uilra iulra ulira luira ilura liura rilua irlua rliua lriua ilrua lirua urali ruali uarli aurli rauli aruli urlai rulai ulrai lurai rluai lruai ualri aulri ulari luari aluri lauri ralui arlui rlaui lraui alrui larui uialr iualr uailr auilr iaulr aiulr uilar iular uliar luiar iluar liuar ualir aulir ulair luair aluir lauir ialur ailur ilaur liaur aliur laiur rialu iralu railu arilu iarlu airlu rilau irlau rliau lriau ilrau lirau raliu arliu rlaiu lraiu alriu lariu ialru ailru ilaru liaru aliru lairu
Note: these 'words' (valid or invalid) are all the permutations of the word urial. These words are obtained by scrambling the letters in urial.