eruvs reuvs eurvs uervs ruevs urevs ervus revus evrus verus rveus vreus euvrs uevrs evurs veurs uvers vuers ruves urves rvues vrues uvres vures erusv reusv eursv uersv ruesv uresv ersuv resuv esruv seruv rseuv sreuv eusrv uesrv esurv seurv userv suerv rusev ursev rsuev sruev usrev surev ervsu revsu evrsu versu rvesu vresu ersvu resvu esrvu servu rsevu srevu evsru vesru esvru sevru vseru sveru rvseu vrseu rsveu srveu vsreu svreu euvsr uevsr evusr veusr uvesr vuesr eusvr uesvr esuvr seuvr usevr suevr evsur vesur esvur sevur vseur sveur uvser vuser usver suver vsuer svuer ruvse urvse rvuse vruse uvrse vurse rusve ursve rsuve sruve usrve surve rvsue vrsue rsvue srvue vsrue svrue uvsre vusre usvre suvre vsure svure
Note: these 'words' (valid or invalid) are all the permutations of the word eruvs. These words are obtained by scrambling the letters in eruvs.