pucer upcer pcuer cpuer ucper cuper puecr upecr peucr epucr uepcr eupcr pceur cpeur pecur epcur cepur ecpur ucepr cuepr uecpr eucpr ceupr ecupr pucre upcre pcure cpure ucpre cupre purce uprce pruce rpuce urpce rupce pcrue cprue prcue rpcue crpue rcpue ucrpe curpe urcpe rucpe crupe rcupe puerc uperc peurc epurc ueprc euprc purec uprec pruec rpuec urpec rupec peruc epruc preuc rpeuc erpuc repuc uerpc eurpc urepc ruepc erupc reupc pceru cperu pecru epcru cepru ecpru pcreu cpreu prceu rpceu crpeu rcpeu percu eprcu precu rpecu erpcu repcu cerpu ecrpu crepu rcepu ercpu recpu ucerp cuerp uecrp eucrp ceurp ecurp ucrep curep urcep rucep cruep rcuep uercp eurcp urecp ruecp erucp reucp cerup ecrup creup rceup ercup recup
Note: these 'words' (valid or invalid) are all the permutations of the word pucer. These words are obtained by scrambling the letters in pucer.