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