wadts awdts wdats dwats adwts dawts watds awtds wtads twads atwds tawds wdtas dwtas wtdas twdas dtwas tdwas adtws datws atdws tadws dtaws tdaws wadst awdst wdast dwast adwst dawst wasdt awsdt wsadt swadt aswdt sawdt wdsat dwsat wsdat swdat dswat sdwat adswt daswt asdwt sadwt dsawt sdawt watsd awtsd wtasd twasd atwsd tawsd wastd awstd wsatd swatd aswtd sawtd wtsad twsad wstad swtad tswad stwad atswd taswd astwd satwd tsawd stawd wdtsa dwtsa wtdsa twdsa dtwsa tdwsa wdsta dwsta wsdta swdta dswta sdwta wtsda twsda wstda swtda tswda stwda dtswa tdswa dstwa sdtwa tsdwa stdwa adtsw datsw atdsw tadsw dtasw tdasw adstw dastw asdtw sadtw dsatw sdatw atsdw tasdw astdw satdw tsadw stadw dtsaw tdsaw dstaw sdtaw tsdaw stdaw
Note: these 'words' (valid or invalid) are all the permutations of the word wadts. These words are obtained by scrambling the letters in wadts.