prefer rpefer perfer eprfer repfer erpfer prfeer rpfeer pfreer fpreer rfpeer frpeer pefrer epfrer pferer fperer efprer feprer refper erfper rfeper freper efrper ferper preefr rpeefr perefr eprefr repefr erpefr preefr rpeefr perefr eprefr repefr erpefr peerfr eperfr peerfr eperfr eeprfr eeprfr reepfr erepfr reepfr erepfr eerpfr eerpfr prfeer rpfeer pfreer fpreer rfpeer frpeer prefer rpefer perfer eprfer repfer erpfer pferer fperer pefrer epfrer feprer efprer rfeper freper refper erfper ferper efrper peferr epferr pfeerr fpeerr efperr feperr peefrr epefrr peefrr epefrr eepfrr eepfrr pfeerr fpeerr peferr epferr feperr efperr efeprr feeprr eefprr eefprr feeprr efeprr refepr erfepr rfeepr freepr efrepr ferepr reefpr erefpr reefpr erefpr eerfpr eerfpr rfeepr freepr refepr erfepr ferepr efrepr eferpr feerpr eefrpr eefrpr feerpr eferpr prefre rpefre perfre eprfre repfre erpfre prfere rpfere pfrere fprere rfpere frpere pefrre epfrre pferre fperre efprre feprre refpre erfpre rfepre frepre efrpre ferpre prerfe rperfe perrfe eprrfe reprfe erprfe prrefe rprefe prrefe rprefe rrpefe rrpefe perrfe eprrfe prerfe rperfe erprfe reprfe rerpfe errpfe rrepfe rrepfe errpfe rerpfe prfree rpfree pfrree fprree rfpree frpree prrfee rprfee prrfee rprfee rrpfee rrpfee pfrree fprree prfree rpfree frpree rfpree rfrpee frrpee rrfpee rrfpee frrpee rfrpee pefrre epfrre pferre fperre efprre feprre perfre eprfre prefre rpefre erpfre repfre pfrere fprere prfere rpfere frpere rfpere efrpre ferpre erfpre refpre frepre rfepre refrpe erfrpe rferpe frerpe efrrpe ferrpe rerfpe errfpe rrefpe rrefpe errfpe rerfpe rfrepe frrepe rrfepe rrfepe frrepe rfrepe efrrpe ferrpe erfrpe refrpe frerpe rferpe preerf rpeerf pererf eprerf reperf erperf preerf rpeerf pererf eprerf reperf erperf peerrf eperrf peerrf eperrf eeprrf eeprrf reeprf ereprf reeprf ereprf eerprf eerprf preref rperef perref eprref repref erpref prreef rpreef prreef rpreef rrpeef rrpeef perref eprref preref rperef erpref repref rerpef errpef rrepef rrepef errpef rerpef preref rperef perref eprref repref erpref prreef rpreef prreef rpreef rrpeef rrpeef perref eprref preref rperef erpref repref rerpef errpef rrepef rrepef errpef rerpef peerrf eperrf peerrf eperrf eeprrf eeprrf pererf eprerf preerf rpeerf erperf reperf pererf eprerf preerf rpeerf erperf reperf eerprf eerprf ereprf reeprf ereprf reeprf reerpf ererpf reerpf ererpf eerrpf eerrpf rerepf errepf rreepf rreepf errepf rerepf rerepf errepf rreepf rreepf errepf rerepf eerrpf eerrpf ererpf reerpf ererpf reerpf prfere rpfere pfrere fprere rfpere frpere prefre rpefre perfre eprfre repfre erpfre pferre fperre pefrre epfrre feprre efprre rfepre frepre refpre erfpre ferpre efrpre prfree rpfree pfrree fprree rfpree frpree prrfee rprfee prrfee rprfee rrpfee rrpfee pfrree fprree prfree rpfree frpree rfpree rfrpee frrpee rrfpee rrfpee frrpee rfrpee prerfe rperfe perrfe eprrfe reprfe erprfe prrefe rprefe prrefe rprefe rrpefe rrpefe perrfe eprrfe prerfe rperfe erprfe reprfe rerpfe errpfe rrepfe rrepfe errpfe rerpfe pferre fperre pefrre epfrre feprre efprre pfrere fprere prfere rpfere frpere rfpere perfre eprfre prefre rpefre erpfre repfre ferpre efrpre frepre rfepre erfpre refpre rferpe frerpe refrpe erfrpe ferrpe efrrpe rfrepe frrepe rrfepe rrfepe frrepe rfrepe rerfpe errfpe rrefpe rrefpe errfpe rerfpe ferrpe efrrpe frerpe rferpe erfrpe refrpe peferr epferr pfeerr fpeerr efperr feperr peefrr epefrr peefrr epefrr eepfrr eepfrr pfeerr fpeerr peferr epferr feperr efperr efeprr feeprr eefprr eefprr feeprr efeprr pefrer epfrer pferer fperer efprer feprer perfer eprfer prefer rpefer erpfer repfer pfreer fpreer prfeer rpfeer frpeer rfpeer efrper ferper erfper refper freper rfeper peerfr eperfr peerfr eperfr eeprfr eeprfr perefr eprefr preefr rpeefr erpefr repefr perefr eprefr preefr rpeefr erpefr repefr eerpfr eerpfr erepfr reepfr erepfr reepfr pferer fperer pefrer epfrer feprer efprer pfreer fpreer prfeer rpfeer frpeer rfpeer perfer eprfer prefer rpefer erpfer repfer ferper efrper freper rfeper erfper refper eferpr feerpr eefrpr eefrpr feerpr eferpr efrepr ferepr erfepr refepr freepr rfeepr eerfpr eerfpr erefpr reefpr erefpr reefpr ferepr efrepr freepr rfeepr erfepr refepr referp erferp rfeerp freerp efrerp fererp reefrp erefrp reefrp erefrp eerfrp eerfrp rfeerp freerp referp erferp fererp efrerp eferrp feerrp eefrrp eefrrp feerrp eferrp refrep erfrep rferep frerep efrrep ferrep rerfep errfep rrefep rrefep errfep rerfep rfreep frreep rrfeep rrfeep frreep rfreep efrrep ferrep erfrep refrep frerep rferep reerfp ererfp reerfp ererfp eerrfp eerrfp rerefp errefp rreefp rreefp errefp rerefp rerefp errefp rreefp rreefp errefp rerefp eerrfp eerrfp ererfp reerfp ererfp reerfp rferep frerep refrep erfrep ferrep efrrep rfreep frreep rrfeep rrfeep frreep rfreep rerfep errfep rrefep rrefep errfep rerfep ferrep efrrep frerep rferep erfrep refrep eferrp feerrp eefrrp eefrrp feerrp eferrp efrerp fererp erferp referp freerp rfeerp eerfrp eerfrp erefrp reefrp erefrp reefrp fererp efrerp freerp rfeerp erferp referp
Note: these 'words' (valid or invalid) are all the permutations of the word prefer. These words are obtained by scrambling the letters in prefer.