dorts odrts drots rdots ordts rodts dotrs odtrs dtors tdors otdrs todrs drtos rdtos dtros tdros rtdos trdos ortds rotds otrds tords rtods trods dorst odrst drost rdost ordst rodst dosrt odsrt dsort sdort osdrt sodrt drsot rdsot dsrot sdrot rsdot srdot orsdt rosdt osrdt sordt rsodt srodt dotsr odtsr dtosr tdosr otdsr todsr dostr odstr dsotr sdotr osdtr sodtr dtsor tdsor dstor sdtor tsdor stdor otsdr tosdr ostdr sotdr tsodr stodr drtso rdtso dtrso tdrso rtdso trdso drsto rdsto dsrto sdrto rsdto srdto dtsro tdsro dstro sdtro tsdro stdro rtsdo trsdo rstdo srtdo tsrdo strdo ortsd rotsd otrsd torsd rtosd trosd orstd rostd osrtd sortd rsotd srotd otsrd tosrd ostrd sotrd tsord stord rtsod trsod rstod srtod tsrod strod
Note: these 'words' (valid or invalid) are all the permutations of the word dorts. These words are obtained by scrambling the letters in dorts.