ppocu ppocu popcu oppcu popcu oppcu ppcou ppcou pcpou cppou pcpou cppou pocpu opcpu pcopu cpopu ocppu coppu pocpu opcpu pcopu cpopu ocppu coppu ppouc ppouc popuc oppuc popuc oppuc ppuoc ppuoc pupoc uppoc pupoc uppoc poupc opupc puopc upopc ouppc uoppc poupc opupc puopc upopc ouppc uoppc ppcuo ppcuo pcpuo cppuo pcpuo cppuo ppuco ppuco pupco uppco pupco uppco pcupo cpupo pucpo upcpo cuppo ucppo pcupo cpupo pucpo upcpo cuppo ucppo pocup opcup pcoup cpoup ocpup copup poucp opucp puocp upocp oupcp uopcp pcuop cpuop pucop upcop cupop ucpop ocupp coupp oucpp uocpp cuopp ucopp pocup opcup pcoup cpoup ocpup copup poucp opucp puocp upocp oupcp uopcp pcuop cpuop pucop upcop cupop ucpop ocupp coupp oucpp uocpp cuopp ucopp
Note: these 'words' (valid or invalid) are all the permutations of the word ppocu. These words are obtained by scrambling the letters in ppocu.