purep uprep pruep rpuep urpep rupep puerp uperp peurp epurp ueprp euprp preup rpeup perup eprup repup erpup urepp ruepp uerpp eurpp reupp erupp purpe uprpe prupe rpupe urppe ruppe pupre uppre ppure ppure uppre pupre prpue rppue pprue pprue rppue prpue urppe ruppe uprpe purpe rpupe prupe puepr upepr peupr epupr ueppr euppr puper upper ppuer ppuer upper puper pepur eppur ppeur ppeur eppur pepur ueppr euppr upepr puepr epupr peupr prepu rpepu perpu eprpu reppu erppu prpeu rppeu ppreu ppreu rppeu prpeu pepru eppru pperu pperu eppru pepru reppu erppu rpepu prepu eprpu perpu urepp ruepp uerpp eurpp reupp erupp urpep rupep uprep purep rpuep pruep ueprp euprp uperp puerp epurp peurp repup erpup rpeup preup eprup perup
Note: these 'words' (valid or invalid) are all the permutations of the word purep. These words are obtained by scrambling the letters in purep.