perse eprse prese rpese erpse repse pesre epsre psere spere espre sepre prsee rpsee psree spree rspee srpee erspe respe esrpe serpe rsepe srepe peres epres prees rpees erpes repes peers epers peers epers eeprs eeprs prees rpees peres epres repes erpes ereps reeps eerps eerps reeps ereps peser epser pseer speer esper seper peesr epesr peesr epesr eepsr eepsr pseer speer peser epser seper esper esepr seepr eespr eespr seepr esepr prsee rpsee psree spree rspee srpee prese rpese perse eprse repse erpse psere spere pesre epsre sepre espre rsepe srepe respe erspe serpe esrpe ersep resep esrep serep rseep sreep eresp reesp eersp eersp reesp eresp eserp seerp eesrp eesrp seerp eserp rseep sreep resep ersep serep esrep
Note: these 'words' (valid or invalid) are all the permutations of the word perse. These words are obtained by scrambling the letters in perse.