urped ruped upred pured rpued prued urepd ruepd uerpd eurpd reupd erupd uperd puerd ueprd euprd peurd epurd rpeud preud repud erpud perud eprud urpde rupde uprde purde rpude prude urdpe rudpe udrpe durpe rdupe drupe updre pudre udpre dupre pdure dpure rpdue prdue rdpue drpue pdrue dprue uredp ruedp uerdp eurdp reudp erudp urdep rudep udrep durep rduep druep uedrp eudrp uderp duerp edurp deurp redup erdup rdeup dreup edrup derup upedr puedr uepdr eupdr peudr epudr upder puder udper duper pduer dpuer uedpr eudpr udepr duepr edupr deupr pedur epdur pdeur dpeur edpur depur rpedu predu repdu erpdu perdu eprdu rpdeu prdeu rdpeu drpeu pdreu dpreu redpu erdpu rdepu drepu edrpu derpu pedru epdru pderu dperu edpru depru
Note: these 'words' (valid or invalid) are all the permutations of the word urped. These words are obtained by scrambling the letters in urped.