rudie urdie rduie druie udrie durie ruide uride riude irude uirde iurde rdiue driue ridue irdue dirue idrue udire duire uidre iudre diure idure rudei urdei rduei druei udrei durei ruedi uredi reudi erudi uerdi eurdi rdeui dreui redui erdui derui edrui uderi dueri uedri eudri deuri eduri ruied uried riued irued uired iured rueid ureid reuid eruid uerid eurid rieud ireud reiud eriud ierud eirud uierd iuerd ueird euird ieurd eiurd rdieu drieu rideu irdeu direu idreu rdeiu dreiu rediu erdiu deriu edriu riedu iredu reidu eridu ierdu eirdu dieru ideru deiru ediru iedru eidru udier duier uider iuder diuer iduer udeir dueir uedir eudir deuir eduir uiedr iuedr ueidr euidr ieudr eiudr dieur ideur deiur ediur iedur eidur
Note: these 'words' (valid or invalid) are all the permutations of the word rudie. These words are obtained by scrambling the letters in rudie.