srude rsude surde usrde rusde ursde srdue rsdue sdrue dsrue rdsue drsue sudre usdre sdure dsure udsre dusre rudse urdse rduse druse udrse durse srued rsued sured usred rused ursed sreud rseud serud esrud resud ersud suerd userd seurd esurd uesrd eusrd ruesd uresd reusd erusd uersd eursd srdeu rsdeu sdreu dsreu rdseu drseu sredu rsedu serdu esrdu resdu ersdu sderu dseru sedru esdru desru edsru rdesu dresu redsu erdsu dersu edrsu suder usder sduer dsuer udser duser suedr usedr seudr esudr uesdr eusdr sdeur dseur sedur esdur desur edsur udesr duesr uedsr eudsr deusr edusr rudes urdes rdues drues udres dures rueds ureds reuds eruds uerds eurds rdeus dreus redus erdus derus edrus uders duers uedrs eudrs deurs edurs
Note: these 'words' (valid or invalid) are all the permutations of the word srude. These words are obtained by scrambling the letters in srude.