urease ruease uerase eurase reuase eruase uraese ruaese uarese aurese rauese aruese uearse euarse uaerse auerse eaurse aeurse reause erause raeuse areuse earuse aeruse uresae ruesae uersae eursae reusae erusae urseae ruseae usreae sureae rsueae srueae uesrae eusrae userae suerae esurae seurae resuae ersuae rseuae sreuae esruae seruae urasee ruasee uarsee aursee rausee arusee ursaee rusaee usraee suraee rsuaee sruaee uasree ausree usaree suaree asuree sauree rasuee arsuee rsauee srauee asruee saruee ueasre euasre uaesre auesre eausre aeusre uesare eusare useare sueare esuare seuare uasere ausere usaere suaere asuere sauere easure aesure esaure seaure aseure saeure reasue erasue raesue aresue earsue aersue resaue ersaue rseaue sreaue esraue seraue raseue arseue rsaeue sraeue asreue sareue easrue aesrue esarue searue aserue saerue ureaes rueaes ueraes euraes reuaes eruaes uraees ruaees uarees aurees rauees aruees ueares euares uaeres aueres eaures aeures reaues eraues raeues areues earues aerues ureeas rueeas uereas eureas reueas erueas ureeas rueeas uereas eureas reueas erueas ueeras eueras ueeras eueras eeuras eeuras reeuas ereuas reeuas ereuas eeruas eeruas uraees ruaees uarees aurees rauees aruees ureaes rueaes ueraes euraes reuaes eruaes uaeres aueres ueares euares aeures eaures raeues areues reaues eraues aerues earues ueaers euaers uaeers aueers eauers aeuers ueears euears ueears euears eeuars eeuars uaeers aueers ueaers euaers aeuers eauers eaeurs aeeurs eeaurs eeaurs aeeurs eaeurs reaeus eraeus raeeus areeus eareus aereus reeaus ereaus reeaus ereaus eeraus eeraus raeeus areeus reaeus eraeus aereus eareus eaerus aeerus eearus eearus aeerus eaerus uresea ruesea uersea eursea reusea erusea urseea ruseea usreea sureea rsueea srueea uesrea eusrea userea suerea esurea seurea resuea ersuea rseuea sreuea esruea seruea ureesa rueesa ueresa euresa reuesa eruesa ureesa rueesa ueresa euresa reuesa eruesa ueersa euersa ueersa euersa eeursa eeursa reeusa ereusa reeusa ereusa eerusa eerusa urseea ruseea usreea sureea rsueea srueea uresea ruesea uersea eursea reusea erusea userea suerea uesrea eusrea seurea esurea rseuea sreuea resuea ersuea seruea esruea uesera eusera useera sueera esuera seuera ueesra euesra ueesra euesra eeusra eeusra useera sueera uesera eusera seuera esuera eseura seeura eesura eesura seeura eseura reseua erseua rseeua sreeua esreua sereua reesua eresua reesua eresua eersua eersua rseeua sreeua reseua erseua sereua esreua eserua seerua eesrua eesrua seerua eserua urasee ruasee uarsee aursee rausee arusee ursaee rusaee usraee suraee rsuaee sruaee uasree ausree usaree suaree asuree sauree rasuee arsuee rsauee srauee asruee saruee uraese ruaese uarese aurese rauese aruese urease ruease uerase eurase reuase eruase uaerse auerse uearse euarse aeurse eaurse raeuse areuse reause erause aeruse earuse urseae ruseae usreae sureae rsueae srueae uresae ruesae uersae eursae reusae erusae userae suerae uesrae eusrae seurae esurae rseuae sreuae resuae ersuae seruae esruae uasere ausere usaere suaere asuere sauere uaesre auesre ueasre euasre aeusre eausre useare sueare uesare eusare seuare esuare aseure saeure aesure easure seaure esaure raseue arseue rsaeue sraeue asreue sareue raesue aresue reasue erasue aersue earsue rseaue sreaue resaue ersaue seraue esraue aserue saerue aesrue easrue searue esarue ueaser euaser uaeser aueser eauser aeuser uesaer eusaer useaer sueaer esuaer seuaer uaseer auseer usaeer suaeer asueer saueer easuer aesuer esauer seauer aseuer saeuer ueaesr euaesr uaeesr aueesr eauesr aeuesr ueeasr eueasr ueeasr eueasr eeuasr eeuasr uaeesr aueesr ueaesr euaesr aeuesr eauesr eaeusr aeeusr eeausr eeausr aeeusr eaeusr uesear eusear useear sueear esuear seuear ueesar euesar ueesar euesar eeusar eeusar useear sueear uesear eusear seuear esuear eseuar seeuar eesuar eesuar seeuar eseuar uaseer auseer usaeer suaeer asueer saueer uaeser aueser ueaser euaser aeuser eauser useaer sueaer uesaer eusaer seuaer esuaer aseuer saeuer aesuer easuer seauer esauer easeur aeseur esaeur seaeur aseeur saeeur eaesur aeesur eeasur eeasur aeesur eaesur eseaur seeaur eesaur eesaur seeaur eseaur aseeur saeeur aeseur easeur seaeur esaeur reaseu eraseu raeseu areseu earseu aerseu resaeu ersaeu rseaeu sreaeu esraeu seraeu raseeu arseeu rsaeeu sraeeu asreeu sareeu easreu aesreu esareu seareu asereu saereu reaesu eraesu raeesu areesu earesu aeresu reeasu ereasu reeasu ereasu eerasu eerasu raeesu areesu reaesu eraesu aeresu earesu eaersu aeersu eearsu eearsu aeersu eaersu reseau erseau rseeau sreeau esreau sereau reesau eresau reesau eresau eersau eersau rseeau sreeau reseau erseau sereau esreau eserau seerau eesrau eesrau seerau eserau raseeu arseeu rsaeeu sraeeu asreeu sareeu raeseu areseu reaseu eraseu aerseu earseu rseaeu sreaeu resaeu ersaeu seraeu esraeu asereu saereu aesreu easreu seareu esareu easeru aeseru esaeru seaeru aseeru saeeru eaesru aeesru eeasru eeasru aeesru eaesru esearu seearu eesaru eesaru seearu esearu aseeru saeeru aeseru easeru seaeru esaeru
Note: these 'words' (valid or invalid) are all the permutations of the word urease. These words are obtained by scrambling the letters in urease.