preys rpeys perys eprys repys erpys pryes rpyes pyres ypres rypes yrpes peyrs epyrs pyers ypers eyprs yeprs reyps eryps ryeps yreps eyrps yerps presy rpesy persy eprsy repsy erpsy prsey rpsey psrey sprey rspey srpey pesry epsry psery spery espry sepry respy erspy rsepy srepy esrpy serpy pryse rpyse pyrse yprse rypse yrpse prsye rpsye psrye sprye rspye srpye pysre ypsre psyre spyre yspre sypre ryspe yrspe rsype srype ysrpe syrpe peysr epysr pyesr ypesr eypsr yepsr pesyr epsyr pseyr speyr espyr sepyr pyser ypser psyer spyer ysper syper eyspr yespr esypr seypr ysepr syepr reysp erysp ryesp yresp eyrsp yersp resyp ersyp rseyp sreyp esryp seryp rysep yrsep rsyep sryep ysrep syrep eysrp yesrp esyrp seyrp yserp syerp
Note: these 'words' (valid or invalid) are all the permutations of the word preys. These words are obtained by scrambling the letters in preys.