refire erfire rfeire freire efrire ferire reifre erifre riefre irefre eirfre ierfre rfiere friere rifere irfere firere ifrere efirre feirre eifrre iefrre fierre iferre refrie erfrie rferie frerie efrrie ferrie rerfie errfie rrefie rrefie errfie rerfie rfreie frreie rrfeie rrfeie frreie rfreie efrrie ferrie erfrie refrie frerie rferie reirfe erirfe rierfe irerfe eirrfe ierrfe rerife errife rreife rreife errife rerife rirefe irrefe rriefe rriefe irrefe rirefe eirrfe ierrfe erirfe reirfe irerfe rierfe rfiree friree rifree irfree firree ifrree rfriee frriee rrfiee rrfiee frriee rfriee rirfee irrfee rrifee rrifee irrfee rirfee firree ifrree friree rfiree irfree rifree efirre feirre eifrre iefrre fierre iferre efrire ferire erfire refire freire rfeire eirfre ierfre erifre reifre irefre riefre firere ifrere friere rfiere irfere rifere refier erfier rfeier freier efrier ferier reifer erifer riefer irefer eirfer ierfer rfieer frieer rifeer irfeer fireer ifreer efirer feirer eifrer iefrer fierer iferer refeir erfeir rfeeir freeir efreir fereir reefir erefir reefir erefir eerfir eerfir rfeeir freeir refeir erfeir fereir efreir eferir feerir eefrir eefrir feerir eferir reiefr eriefr rieefr ireefr eirefr ierefr reeifr ereifr reeifr ereifr eerifr eerifr rieefr ireefr reiefr eriefr ierefr eirefr eierfr ieerfr eeirfr eeirfr ieerfr eierfr rfieer frieer rifeer irfeer fireer ifreer rfeier freier refier erfier ferier efrier riefer irefer reifer erifer ierfer eirfer fierer iferer feirer efirer iefrer eifrer efierr feierr eiferr ieferr fieerr ifeerr efeirr feeirr eefirr eefirr feeirr efeirr eiefrr ieefrr eeifrr eeifrr ieefrr eiefrr fieerr ifeerr feierr efierr ieferr eiferr refrei erfrei rferei frerei efrrei ferrei rerfei errfei rrefei rrefei errfei rerfei rfreei frreei rrfeei rrfeei frreei rfreei efrrei ferrei erfrei refrei frerei rferei referi erferi rfeeri freeri efreri fereri reefri erefri reefri erefri eerfri eerfri rfeeri freeri referi erferi fereri efreri eferri feerri eefrri eefrri feerri eferri rerefi errefi rreefi rreefi errefi rerefi reerfi ererfi reerfi ererfi eerrfi eerrfi rreefi rreefi rerefi errefi rerefi errefi ererfi reerfi eerrfi eerrfi reerfi ererfi rfreei frreei rrfeei rrfeei frreei rfreei rferei frerei refrei erfrei ferrei efrrei rrefei rrefei rerfei errfei rerfei errfei frerei rferei ferrei efrrei refrei erfrei efreri fereri erferi referi freeri rfeeri eferri feerri eefrri eefrri feerri eferri erefri reefri eerfri eerfri reefri erefri freeri rfeeri fereri efreri referi erferi reiref eriref rieref ireref eirref ierref rerief errief rreief rreief errief rerief rireef irreef rrieef rrieef irreef rireef eirref ierref eriref reiref ireref rieref reierf erierf rieerf ireerf eirerf iererf reeirf ereirf reeirf ereirf eerirf eerirf rieerf ireerf reierf erierf iererf eirerf eierrf ieerrf eeirrf eeirrf ieerrf eierrf rereif erreif rreeif rreeif erreif rereif reerif ererif reerif ererif eerrif eerrif rreeif rreeif rereif erreif rereif erreif ererif reerif eerrif eerrif reerif ererif rireef irreef rrieef rrieef irreef rireef rieref ireref reiref eriref ierref eirref rreief rreief rerief errief rerief errief ireref rieref ierref eirref reiref eriref eirerf iererf erierf reierf ireerf rieerf eierrf ieerrf eeirrf eeirrf ieerrf eierrf ereirf reeirf eerirf eerirf reeirf ereirf ireerf rieerf iererf eirerf reierf erierf rfiree friree rifree irfree firree ifrree rfriee frriee rrfiee rrfiee frriee rfriee rirfee irrfee rrifee rrifee irrfee rirfee firree ifrree friree rfiree irfree rifree rfiere friere rifere irfere firere ifrere rfeire freire refire erfire ferire efrire riefre irefre reifre erifre ierfre eirfre fierre iferre feirre efirre iefrre eifrre rfreie frreie rrfeie rrfeie frreie rfreie rferie frerie refrie erfrie ferrie efrrie rrefie rrefie rerfie errfie rerfie errfie frerie rferie ferrie efrrie refrie erfrie rirefe irrefe rriefe rriefe irrefe rirefe rierfe irerfe reirfe erirfe ierrfe eirrfe rreife rreife rerife errife rerife errife irerfe rierfe ierrfe eirrfe reirfe erirfe firere ifrere friere rfiere irfere rifere fierre iferre feirre efirre iefrre eifrre freire rfeire ferire efrire refire erfire irefre riefre ierfre eirfre reifre erifre efirer feirer eifrer iefrer fierer iferer efrier ferier erfier refier freier rfeier eirfer ierfer erifer reifer irefer riefer fireer ifreer frieer rfieer irfeer rifeer efierr feierr eiferr ieferr fieerr ifeerr efeirr feeirr eefirr eefirr feeirr efeirr eiefrr ieefrr eeifrr eeifrr ieefrr eiefrr fieerr ifeerr feierr efierr ieferr eiferr efreir fereir erfeir refeir freeir rfeeir eferir feerir eefrir eefrir feerir eferir erefir reefir eerfir eerfir reefir erefir freeir rfeeir fereir efreir refeir erfeir eirefr ierefr eriefr reiefr ireefr rieefr eierfr ieerfr eeirfr eeirfr ieerfr eierfr ereifr reeifr eerifr eerifr reeifr ereifr ireefr rieefr ierefr eirefr reiefr eriefr fireer ifreer frieer rfieer irfeer rifeer fierer iferer feirer efirer iefrer eifrer freier rfeier ferier efrier refier erfier irefer riefer ierfer eirfer reifer erifer
Note: these 'words' (valid or invalid) are all the permutations of the word refire. These words are obtained by scrambling the letters in refire.