prige rpige pirge iprge ripge irpge prgie rpgie pgrie gprie rgpie grpie pigre ipgre pgire gpire igpre gipre rigpe irgpe rgipe gripe igrpe girpe prieg rpieg pireg ipreg ripeg irpeg preig rpeig perig eprig repig erpig pierg iperg peirg epirg ieprg eiprg riepg irepg reipg eripg ierpg eirpg prgei rpgei pgrei gprei rgpei grpei pregi rpegi pergi eprgi repgi erpgi pgeri gperi pegri epgri gepri egpri rgepi grepi regpi ergpi gerpi egrpi piger ipger pgier gpier igper giper piegr ipegr peigr epigr iepgr eipgr pgeir gpeir pegir epgir gepir egpir igepr giepr iegpr eigpr geipr egipr rigep irgep rgiep griep igrep girep riegp iregp reigp erigp iergp eirgp rgeip greip regip ergip gerip egrip igerp gierp iegrp eigrp geirp egirp
Note: these 'words' (valid or invalid) are all the permutations of the word prige. These words are obtained by scrambling the letters in prige.