recase ercase rcease crease ecrase cerase reacse eracse raecse arecse earcse aercse rcaese craese racese arcese carese acrese ecarse cearse eacrse aecrse caerse acerse recsae ercsae rcesae cresae ecrsae cersae rescae erscae rsecae srecae esrcae sercae rcseae crseae rsceae srceae csreae screae ecsrae cesrae escrae secrae cserae scerae reasce erasce raesce aresce earsce aersce resace ersace rseace sreace esrace serace rasece arsece rsaece sraece asrece sarece easrce aesrce esarce searce aserce saerce rcasee crasee racsee arcsee carsee acrsee rcsaee crsaee rscaee srcaee csraee scraee rascee arscee rsacee sracee asrcee sarcee casree acsree csaree scaree ascree sacree ecasre ceasre eacsre aecsre caesre acesre ecsare cesare escare secare cseare sceare eascre aescre esacre seacre asecre saecre casere acsere csaere scaere ascere sacere recaes ercaes rceaes creaes ecraes ceraes reaces eraces raeces areces earces aerces rcaees craees racees arcees carees acrees ecares ceares eacres aecres caeres aceres receas erceas rceeas creeas ecreas cereas reecas erecas reecas erecas eercas eercas rceeas creeas receas erceas cereas ecreas eceras ceeras eecras eecras ceeras eceras reaecs eraecs raeecs areecs earecs aerecs reeacs ereacs reeacs ereacs eeracs eeracs raeecs areecs reaecs eraecs aerecs earecs eaercs aeercs eearcs eearcs aeercs eaercs rcaees craees racees arcees carees acrees rceaes creaes recaes ercaes ceraes ecraes raeces areces reaces eraces aerces earces caeres aceres ceares ecares aecres eacres ecaers ceaers eacers aecers caeers aceers ecears ceears eecars eecars ceears ecears eaecrs aeecrs eeacrs eeacrs aeecrs eaecrs caeers aceers ceaers ecaers aecers eacers recsea ercsea rcesea cresea ecrsea cersea rescea erscea rsecea srecea esrcea sercea rcseea crseea rsceea srceea csreea screea ecsrea cesrea escrea secrea cserea scerea recesa ercesa rceesa creesa ecresa ceresa reecsa erecsa reecsa erecsa eercsa eercsa rceesa creesa recesa ercesa ceresa ecresa ecersa ceersa eecrsa eecrsa ceersa ecersa reseca erseca rseeca sreeca esreca sereca reesca eresca reesca eresca eersca eersca rseeca sreeca reseca erseca sereca esreca eserca seerca eesrca eesrca seerca eserca rcseea crseea rsceea srceea csreea screea rcesea cresea recsea ercsea cersea ecrsea rsecea srecea rescea erscea sercea esrcea cserea scerea cesrea ecsrea secrea escrea ecsera cesera escera secera cseera sceera ecesra ceesra eecsra eecsra ceesra ecesra esecra seecra eescra eescra seecra esecra cseera sceera cesera ecsera secera escera reasec erasec raesec aresec earsec aersec resaec ersaec rseaec sreaec esraec seraec raseec arseec rsaeec sraeec asreec sareec easrec aesrec esarec searec aserec saerec reaesc eraesc raeesc areesc earesc aeresc reeasc ereasc reeasc ereasc eerasc eerasc raeesc areesc reaesc eraesc aeresc earesc eaersc aeersc eearsc eearsc aeersc eaersc reseac erseac rseeac sreeac esreac sereac reesac eresac reesac eresac eersac eersac rseeac sreeac reseac erseac sereac esreac eserac seerac eesrac eesrac seerac eserac raseec arseec rsaeec sraeec asreec sareec raesec aresec reasec erasec aersec earsec rseaec sreaec resaec ersaec seraec esraec aserec saerec aesrec easrec searec esarec easerc aeserc esaerc seaerc aseerc saeerc eaesrc aeesrc eeasrc eeasrc aeesrc eaesrc esearc seearc eesarc eesarc seearc esearc aseerc saeerc aeserc easerc seaerc esaerc rcasee crasee racsee arcsee carsee acrsee rcsaee crsaee rscaee srcaee csraee scraee rascee arscee rsacee sracee asrcee sarcee casree acsree csaree scaree ascree sacree rcaese craese racese arcese carese acrese rcease crease recase ercase cerase ecrase raecse arecse reacse eracse aercse earcse caerse acerse cearse ecarse aecrse eacrse rcseae crseae rsceae srceae csreae screae rcesae cresae recsae ercsae cersae ecrsae rsecae srecae rescae erscae sercae esrcae cserae scerae cesrae ecsrae secrae escrae rasece arsece rsaece sraece asrece sarece raesce aresce reasce erasce aersce earsce rseace sreace resace ersace serace esrace aserce saerce aesrce easrce searce esarce casere acsere csaere scaere ascere sacere caesre acesre ceasre ecasre aecsre eacsre cseare sceare cesare ecsare secare escare asecre saecre aescre eascre seacre esacre ecaser ceaser eacser aecser caeser aceser ecsaer cesaer escaer secaer cseaer sceaer eascer aescer esacer seacer asecer saecer caseer acseer csaeer scaeer asceer saceer ecaesr ceaesr eacesr aecesr caeesr aceesr eceasr ceeasr eecasr eecasr ceeasr eceasr eaecsr aeecsr eeacsr eeacsr aeecsr eaecsr caeesr aceesr ceaesr ecaesr aecesr eacesr ecsear cesear escear secear cseear sceear ecesar ceesar eecsar eecsar ceesar ecesar esecar seecar eescar eescar seecar esecar cseear sceear cesear ecsear secear escear easecr aesecr esaecr seaecr aseecr saeecr eaescr aeescr eeascr eeascr aeescr eaescr eseacr seeacr eesacr eesacr seeacr eseacr aseecr saeecr aesecr easecr seaecr esaecr caseer acseer csaeer scaeer asceer saceer caeser aceser ceaser ecaser aecser eacser cseaer sceaer cesaer ecsaer secaer escaer asecer saecer aescer eascer seacer esacer
Note: these 'words' (valid or invalid) are all the permutations of the word recase. These words are obtained by scrambling the letters in recase.