griper rgiper girper igrper rigper irgper grpier rgpier gprier pgrier rpgier prgier giprer igprer gpirer pgirer ipgrer pigrer ripger irpger rpiger priger iprger pirger griepr rgiepr girepr igrepr rigepr irgepr greipr rgeipr geripr egripr regipr ergipr gierpr igerpr geirpr egirpr iegrpr eigrpr riegpr iregpr reigpr erigpr iergpr eirgpr grpeir rgpeir gpreir pgreir rpgeir prgeir grepir rgepir gerpir egrpir regpir ergpir gperir pgerir geprir egprir pegrir epgrir rpegir pregir repgir erpgir pergir eprgir giperr igperr gpierr pgierr ipgerr pigerr gieprr igeprr geiprr egiprr iegprr eigprr gpeirr pgeirr gepirr egpirr pegirr epgirr ipegrr piegrr iepgrr eipgrr peigrr epigrr ripegr irpegr rpiegr priegr ipregr piregr riepgr irepgr reipgr eripgr ierpgr eirpgr rpeigr preigr repigr erpigr perigr eprigr ipergr piergr ieprgr eiprgr peirgr epirgr gripre rgipre girpre igrpre rigpre irgpre grpire rgpire gprire pgrire rpgire prgire giprre igprre gpirre pgirre ipgrre pigrre ripgre irpgre rpigre prigre iprgre pirgre grirpe rgirpe girrpe igrrpe rigrpe irgrpe grripe rgripe grripe rgripe rrgipe rrgipe girrpe igrrpe grirpe rgirpe irgrpe rigrpe rirgpe irrgpe rrigpe rrigpe irrgpe rirgpe grprie rgprie gprrie pgrrie rpgrie prgrie grrpie rgrpie grrpie rgrpie rrgpie rrgpie gprrie pgrrie grprie rgprie prgrie rpgrie rprgie prrgie rrpgie rrpgie prrgie rprgie giprre igprre gpirre pgirre ipgrre pigrre girpre igrpre gripre rgipre irgpre rigpre gprire pgrire grpire rgpire prgire rpgire iprgre pirgre irpgre ripgre prigre rpigre riprge irprge rpirge prirge iprrge pirrge rirpge irrpge rripge rripge irrpge rirpge rprige prrige rrpige rrpige prrige rprige iprrge pirrge irprge riprge prirge rpirge grierp rgierp girerp igrerp rigerp irgerp greirp rgeirp gerirp egrirp regirp ergirp gierrp igerrp geirrp egirrp iegrrp eigrrp riegrp iregrp reigrp erigrp iergrp eirgrp grirep rgirep girrep igrrep rigrep irgrep grriep rgriep grriep rgriep rrgiep rrgiep girrep igrrep grirep rgirep irgrep rigrep rirgep irrgep rrigep rrigep irrgep rirgep grerip rgerip gerrip egrrip regrip ergrip grreip rgreip grreip rgreip rrgeip rrgeip gerrip egrrip grerip rgerip ergrip regrip rergip errgip rregip rregip errgip rergip gierrp igerrp geirrp egirrp iegrrp eigrrp girerp igrerp grierp rgierp irgerp rigerp gerirp egrirp greirp rgeirp ergirp regirp iergrp eirgrp iregrp riegrp erigrp reigrp riergp irergp reirgp erirgp ierrgp eirrgp riregp irregp rriegp rriegp irregp riregp rerigp errigp rreigp rreigp errigp rerigp ierrgp eirrgp irergp riergp erirgp reirgp grperi rgperi gpreri pgreri rpgeri prgeri grepri rgepri gerpri egrpri regpri ergpri gperri pgerri geprri egprri pegrri epgrri rpegri pregri repgri erpgri pergri eprgri grprei rgprei gprrei pgrrei rpgrei prgrei grrpei rgrpei grrpei rgrpei rrgpei rrgpei gprrei pgrrei grprei rgprei prgrei rpgrei rprgei prrgei rrpgei rrpgei prrgei rprgei grerpi rgerpi gerrpi egrrpi regrpi ergrpi grrepi rgrepi grrepi rgrepi rrgepi rrgepi gerrpi egrrpi grerpi rgerpi ergrpi regrpi rergpi errgpi rregpi rregpi errgpi rergpi gperri pgerri geprri egprri pegrri epgrri gpreri pgreri grperi rgperi prgeri rpgeri gerpri egrpri grepri rgepri ergpri regpri pergri eprgri pregri rpegri erpgri repgri rpergi prergi reprgi erprgi perrgi eprrgi rpregi prregi rrpegi rrpegi prregi rpregi rerpgi errpgi rrepgi rrepgi errpgi rerpgi perrgi eprrgi prergi rpergi erprgi reprgi giperr igperr gpierr pgierr ipgerr pigerr gieprr igeprr geiprr egiprr iegprr eigprr gpeirr pgeirr gepirr egpirr pegirr epgirr ipegrr piegrr iepgrr eipgrr peigrr epigrr giprer igprer gpirer pgirer ipgrer pigrer girper igrper griper rgiper irgper rigper gprier pgrier grpier rgpier prgier rpgier iprger pirger irpger ripger priger rpiger gierpr igerpr geirpr egirpr iegrpr eigrpr girepr igrepr griepr rgiepr irgepr rigepr geripr egripr greipr rgeipr ergipr regipr iergpr eirgpr iregpr riegpr erigpr reigpr gperir pgerir geprir egprir pegrir epgrir gpreir pgreir grpeir rgpeir prgeir rpgeir gerpir egrpir grepir rgepir ergpir regpir pergir eprgir pregir rpegir erpgir repgir ipergr piergr ieprgr eiprgr peirgr epirgr ipregr piregr irpegr ripegr priegr rpiegr ierpgr eirpgr irepgr riepgr eripgr reipgr perigr eprigr preigr rpeigr erpigr repigr riperg irperg rpierg prierg iprerg pirerg rieprg ireprg reiprg eriprg ierprg eirprg rpeirg preirg repirg erpirg perirg eprirg iperrg pierrg ieprrg eiprrg peirrg epirrg ripreg irpreg rpireg prireg iprreg pirreg rirpeg irrpeg rripeg rripeg irrpeg rirpeg rprieg prrieg rrpieg rrpieg prrieg rprieg iprreg pirreg irpreg ripreg prireg rpireg rierpg irerpg reirpg erirpg ierrpg eirrpg rirepg irrepg rriepg rriepg irrepg rirepg reripg erripg rreipg rreipg erripg reripg ierrpg eirrpg irerpg rierpg erirpg reirpg rperig prerig reprig erprig perrig eprrig rpreig prreig rrpeig rrpeig prreig rpreig rerpig errpig rrepig rrepig errpig rerpig perrig eprrig prerig rperig erprig reprig iperrg pierrg ieprrg eiprrg peirrg epirrg iprerg pirerg irperg riperg prierg rpierg ierprg eirprg ireprg rieprg eriprg reiprg perirg eprirg preirg rpeirg erpirg repirg
Note: these 'words' (valid or invalid) are all the permutations of the word griper. These words are obtained by scrambling the letters in griper.