sdtyu dstyu stdyu tsdyu dtsyu tdsyu sdytu dsytu sydtu ysdtu dystu ydstu stydu tsydu sytdu ystdu tysdu ytsdu dtysu tdysu dytsu ydtsu tydsu ytdsu sdtuy dstuy stduy tsduy dtsuy tdsuy sduty dsuty sudty usdty dusty udsty study tsudy sutdy ustdy tusdy utsdy dtusy tdusy dutsy udtsy tudsy utdsy sdyut dsyut sydut ysdut dysut ydsut sduyt dsuyt sudyt usdyt dusyt udsyt syudt ysudt suydt usydt yusdt uysdt dyust ydust duyst udyst yudst uydst styud tsyud sytud ystud tysud ytsud stuyd tsuyd sutyd ustyd tusyd utsyd syutd ysutd suytd usytd yustd uystd tyusd ytusd tuysd utysd yutsd uytsd dtyus tdyus dytus ydtus tydus ytdus dtuys tduys dutys udtys tudys utdys dyuts yduts duyts udyts yudts uydts tyuds ytuds tuyds utyds yutds uytds
Note: these 'words' (valid or invalid) are all the permutations of the word sdtyu. These words are obtained by scrambling the letters in sdtyu.