cruder rcuder curder ucrder rucder urcder crduer rcduer cdruer dcruer rdcuer drcuer cudrer ucdrer cdurer dcurer udcrer ducrer rudcer urdcer rducer drucer udrcer durcer cruedr rcuedr curedr ucredr rucedr urcedr creudr rceudr cerudr ecrudr recudr ercudr cuerdr ucerdr ceurdr ecurdr uecrdr eucrdr ruecdr urecdr reucdr erucdr uercdr eurcdr crdeur rcdeur cdreur dcreur rdceur drceur credur rcedur cerdur ecrdur recdur ercdur cderur dcerur cedrur ecdrur decrur edcrur rdecur drecur redcur erdcur dercur edrcur cuderr ucderr cduerr dcuerr udcerr ducerr cuedrr ucedrr ceudrr ecudrr uecdrr eucdrr cdeurr dceurr cedurr ecdurr decurr edcurr udecrr duecrr uedcrr eudcrr deucrr educrr rudecr urdecr rduecr druecr udrecr durecr ruedcr uredcr reudcr erudcr uerdcr eurdcr rdeucr dreucr reducr erducr derucr edrucr udercr duercr uedrcr eudrcr deurcr edurcr crudre rcudre curdre ucrdre rucdre urcdre crdure rcdure cdrure dcrure rdcure drcure cudrre ucdrre cdurre dcurre udcrre ducrre rudcre urdcre rducre drucre udrcre durcre crurde rcurde currde ucrrde rucrde urcrde crrude rcrude crrude rcrude rrcude rrcude currde ucrrde crurde rcurde urcrde rucrde rurcde urrcde rrucde rrucde urrcde rurcde crdrue rcdrue cdrrue dcrrue rdcrue drcrue crrdue rcrdue crrdue rcrdue rrcdue rrcdue cdrrue dcrrue crdrue rcdrue drcrue rdcrue rdrcue drrcue rrdcue rrdcue drrcue rdrcue cudrre ucdrre cdurre dcurre udcrre ducrre curdre ucrdre crudre rcudre urcdre rucdre cdrure dcrure crdure rcdure drcure rdcure udrcre durcre urdcre rudcre drucre rducre rudrce urdrce rdurce drurce udrrce durrce rurdce urrdce rrudce rrudce urrdce rurdce rdruce drruce rrduce rrduce drruce rdruce udrrce durrce urdrce rudrce drurce rdurce cruerd rcuerd curerd ucrerd rucerd urcerd creurd rceurd cerurd ecrurd recurd ercurd cuerrd ucerrd ceurrd ecurrd uecrrd eucrrd ruecrd urecrd reucrd erucrd uercrd eurcrd crured rcured curred ucrred rucred urcred crrued rcrued crrued rcrued rrcued rrcued curred ucrred crured rcured urcred rucred rurced urrced rruced rruced urrced rurced crerud rcerud cerrud ecrrud recrud ercrud crreud rcreud crreud rcreud rrceud rrceud cerrud ecrrud crerud rcerud ercrud recrud rercud errcud rrecud rrecud errcud rercud cuerrd ucerrd ceurrd ecurrd uecrrd eucrrd curerd ucrerd cruerd rcuerd urcerd rucerd cerurd ecrurd creurd rceurd ercurd recurd uercrd eurcrd urecrd ruecrd erucrd reucrd ruercd urercd reurcd erurcd uerrcd eurrcd rurecd urrecd rruecd rruecd urrecd rurecd rerucd errucd rreucd rreucd errucd rerucd uerrcd eurrcd urercd ruercd erurcd reurcd crderu rcderu cdreru dcreru rdceru drceru credru rcedru cerdru ecrdru recdru ercdru cderru dcerru cedrru ecdrru decrru edcrru rdecru drecru redcru erdcru dercru edrcru crdreu rcdreu cdrreu dcrreu rdcreu drcreu crrdeu rcrdeu crrdeu rcrdeu rrcdeu rrcdeu cdrreu dcrreu crdreu rcdreu drcreu rdcreu rdrceu drrceu rrdceu rrdceu drrceu rdrceu crerdu rcerdu cerrdu ecrrdu recrdu ercrdu crredu rcredu crredu rcredu rrcedu rrcedu cerrdu ecrrdu crerdu rcerdu ercrdu recrdu rercdu errcdu rrecdu rrecdu errcdu rercdu cderru dcerru cedrru ecdrru decrru edcrru cdreru dcreru crderu rcderu drceru rdceru cerdru ecrdru credru rcedru ercdru recdru dercru edrcru drecru rdecru erdcru redcru rdercu drercu redrcu erdrcu derrcu edrrcu rdrecu drrecu rrdecu rrdecu drrecu rdrecu rerdcu errdcu rredcu rredcu errdcu rerdcu derrcu edrrcu drercu rdercu erdrcu redrcu cuderr ucderr cduerr dcuerr udcerr ducerr cuedrr ucedrr ceudrr ecudrr uecdrr eucdrr cdeurr dceurr cedurr ecdurr decurr edcurr udecrr duecrr uedcrr eudcrr deucrr educrr cudrer ucdrer cdurer dcurer udcrer ducrer curder ucrder cruder rcuder urcder rucder cdruer dcruer crduer rcduer drcuer rdcuer udrcer durcer urdcer rudcer drucer rducer cuerdr ucerdr ceurdr ecurdr uecrdr eucrdr curedr ucredr cruedr rcuedr urcedr rucedr cerudr ecrudr creudr rceudr ercudr recudr uercdr eurcdr urecdr ruecdr erucdr reucdr cderur dcerur cedrur ecdrur decrur edcrur cdreur dcreur crdeur rcdeur drceur rdceur cerdur ecrdur credur rcedur ercdur recdur dercur edrcur drecur rdecur erdcur redcur udercr duercr uedrcr eudrcr deurcr edurcr udrecr durecr urdecr rudecr druecr rduecr uerdcr eurdcr uredcr ruedcr erudcr reudcr derucr edrucr dreucr rdeucr erducr reducr ruderc urderc rduerc druerc udrerc durerc ruedrc uredrc reudrc erudrc uerdrc eurdrc rdeurc dreurc redurc erdurc derurc edrurc uderrc duerrc uedrrc eudrrc deurrc edurrc rudrec urdrec rdurec drurec udrrec durrec rurdec urrdec rrudec rrudec urrdec rurdec rdruec drruec rrduec rrduec drruec rdruec udrrec durrec urdrec rudrec drurec rdurec ruerdc urerdc reurdc erurdc uerrdc eurrdc ruredc urredc rruedc rruedc urredc ruredc rerudc errudc rreudc rreudc errudc rerudc uerrdc eurrdc urerdc ruerdc erurdc reurdc rderuc dreruc redruc erdruc derruc edrruc rdreuc drreuc rrdeuc rrdeuc drreuc rdreuc rerduc errduc rreduc rreduc errduc rerduc derruc edrruc dreruc rderuc erdruc redruc uderrc duerrc uedrrc eudrrc deurrc edurrc udrerc durerc urderc ruderc druerc rduerc uerdrc eurdrc uredrc ruedrc erudrc reudrc derurc edrurc dreurc rdeurc erdurc redurc
Note: these 'words' (valid or invalid) are all the permutations of the word cruder. These words are obtained by scrambling the letters in cruder.