refall erfall rfeall freall efrall ferall reafll erafll raefll arefll earfll aerfll rfaell fraell rafell arfell farell afrell efarll fearll eafrll aefrll faerll aferll reflal erflal rfelal frelal efrlal ferlal relfal erlfal rlefal lrefal elrfal lerfal rfleal frleal rlfeal lrfeal flreal lfreal eflral felral elfral lefral fleral lferal realfl eralfl raelfl arelfl earlfl aerlfl relafl erlafl rleafl lreafl elrafl lerafl ralefl arlefl rlaefl lraefl alrefl larefl ealrfl aelrfl elarfl learfl alerfl laerfl rfalel fralel raflel arflel farlel afrlel rflael frlael rlfael lrfael flrael lfrael ralfel arlfel rlafel lrafel alrfel larfel falrel aflrel flarel lfarel alfrel lafrel efalrl fealrl eaflrl aeflrl faelrl afelrl eflarl felarl elfarl lefarl flearl lfearl ealfrl aelfrl elafrl leafrl alefrl laefrl falerl aflerl flaerl lfaerl alferl laferl refall erfall rfeall freall efrall ferall reafll erafll raefll arefll earfll aerfll rfaell fraell rafell arfell farell afrell efarll fearll eafrll aefrll faerll aferll reflal erflal rfelal frelal efrlal ferlal relfal erlfal rlefal lrefal elrfal lerfal rfleal frleal rlfeal lrfeal flreal lfreal eflral felral elfral lefral fleral lferal realfl eralfl raelfl arelfl earlfl aerlfl relafl erlafl rleafl lreafl elrafl lerafl ralefl arlefl rlaefl lraefl alrefl larefl ealrfl aelrfl elarfl learfl alerfl laerfl rfalel fralel raflel arflel farlel afrlel rflael frlael rlfael lrfael flrael lfrael ralfel arlfel rlafel lrafel alrfel larfel falrel aflrel flarel lfarel alfrel lafrel efalrl fealrl eaflrl aeflrl faelrl afelrl eflarl felarl elfarl lefarl flearl lfearl ealfrl aelfrl elafrl leafrl alefrl laefrl falerl aflerl flaerl lfaerl alferl laferl reflla erflla rfella frella efrlla ferlla relfla erlfla rlefla lrefla elrfla lerfla rflela frlela rlfela lrfela flrela lfrela eflrla felrla elfrla lefrla flerla lferla reflla erflla rfella frella efrlla ferlla relfla erlfla rlefla lrefla elrfla lerfla rflela frlela rlfela lrfela flrela lfrela eflrla felrla elfrla lefrla flerla lferla rellfa erllfa rlelfa lrelfa elrlfa lerlfa rellfa erllfa rlelfa lrelfa elrlfa lerlfa rllefa lrlefa rllefa lrlefa llrefa llrefa ellrfa lelrfa ellrfa lelrfa llerfa llerfa rfllea frllea rlflea lrflea flrlea lfrlea rfllea frllea rlflea lrflea flrlea lfrlea rllfea lrlfea rllfea lrlfea llrfea llrfea fllrea lflrea fllrea lflrea llfrea llfrea efllra fellra elflra leflra flelra lfelra efllra fellra elflra leflra flelra lfelra ellfra lelfra ellfra lelfra llefra llefra fllera lflera fllera lflera llfera llfera reallf erallf raellf arellf earllf aerllf relalf erlalf rlealf lrealf elralf leralf ralelf arlelf rlaelf lraelf alrelf larelf ealrlf aelrlf elarlf learlf alerlf laerlf reallf erallf raellf arellf earllf aerllf relalf erlalf rlealf lrealf elralf leralf ralelf arlelf rlaelf lraelf alrelf larelf ealrlf aelrlf elarlf learlf alerlf laerlf rellaf erllaf rlelaf lrelaf elrlaf lerlaf rellaf erllaf rlelaf lrelaf elrlaf lerlaf rlleaf lrleaf rlleaf lrleaf llreaf llreaf ellraf lelraf ellraf lelraf lleraf lleraf rallef arllef rlalef lralef alrlef larlef rallef arllef rlalef lralef alrlef larlef rllaef lrlaef rllaef lrlaef llraef llraef allref lalref allref lalref llaref llaref eallrf aellrf elalrf lealrf alelrf laelrf eallrf aellrf elalrf lealrf alelrf laelrf ellarf lelarf ellarf lelarf llearf llearf allerf lalerf allerf lalerf llaerf llaerf rfalle fralle raflle arflle farlle afrlle rflale frlale rlfale lrfale flrale lfrale ralfle arlfle rlafle lrafle alrfle larfle falrle aflrle flarle lfarle alfrle lafrle rfalle fralle raflle arflle farlle afrlle rflale frlale rlfale lrfale flrale lfrale ralfle arlfle rlafle lrafle alrfle larfle falrle aflrle flarle lfarle alfrle lafrle rfllae frllae rlflae lrflae flrlae lfrlae rfllae frllae rlflae lrflae flrlae lfrlae rllfae lrlfae rllfae lrlfae llrfae llrfae fllrae lflrae fllrae lflrae llfrae llfrae rallfe arllfe rlalfe lralfe alrlfe larlfe rallfe arllfe rlalfe lralfe alrlfe larlfe rllafe lrlafe rllafe lrlafe llrafe llrafe allrfe lalrfe allrfe lalrfe llarfe llarfe fallre afllre flalre lfalre alflre laflre fallre afllre flalre lfalre alflre laflre fllare lflare fllare lflare llfare llfare allfre lalfre allfre lalfre llafre llafre efallr feallr eafllr aefllr faellr afellr eflalr felalr elfalr lefalr flealr lfealr ealflr aelflr elaflr leaflr aleflr laeflr falelr aflelr flaelr lfaelr alfelr lafelr efallr feallr eafllr aefllr faellr afellr eflalr felalr elfalr lefalr flealr lfealr ealflr aelflr elaflr leaflr aleflr laeflr falelr aflelr flaelr lfaelr alfelr lafelr efllar fellar elflar leflar flelar lfelar efllar fellar elflar leflar flelar lfelar ellfar lelfar ellfar lelfar llefar llefar fllear lflear fllear lflear llfear llfear eallfr aellfr elalfr lealfr alelfr laelfr eallfr aellfr elalfr lealfr alelfr laelfr ellafr lelafr ellafr lelafr lleafr lleafr allefr lalefr allefr lalefr llaefr llaefr faller afller flaler lfaler alfler lafler faller afller flaler lfaler alfler lafler fllaer lflaer fllaer lflaer llfaer llfaer allfer lalfer allfer lalfer llafer llafer
Note: these 'words' (valid or invalid) are all the permutations of the word refall. These words are obtained by scrambling the letters in refall.