dowts odwts dwots wdots owdts wodts dotws odtws dtows tdows otdws todws dwtos wdtos dtwos tdwos wtdos twdos owtds wotds otwds towds wtods twods dowst odwst dwost wdost owdst wodst doswt odswt dsowt sdowt osdwt sodwt dwsot wdsot dswot sdwot wsdot swdot owsdt wosdt oswdt sowdt wsodt swodt dotsw odtsw dtosw tdosw otdsw todsw dostw odstw dsotw sdotw osdtw sodtw dtsow tdsow dstow sdtow tsdow stdow otsdw tosdw ostdw sotdw tsodw stodw dwtso wdtso dtwso tdwso wtdso twdso dwsto wdsto dswto sdwto wsdto swdto dtswo tdswo dstwo sdtwo tsdwo stdwo wtsdo twsdo wstdo swtdo tswdo stwdo owtsd wotsd otwsd towsd wtosd twosd owstd wostd oswtd sowtd wsotd swotd otswd toswd ostwd sotwd tsowd stowd wtsod twsod wstod swtod tswod stwod
Note: these 'words' (valid or invalid) are all the permutations of the word dowts. These words are obtained by scrambling the letters in dowts.