crews rcews cerws ecrws recws ercws crwes rcwes cwres wcres rwces wrces cewrs ecwrs cwers wcers ewcrs wecrs rewcs erwcs rwecs wrecs ewrcs wercs cresw rcesw cersw ecrsw recsw ercsw crsew rcsew csrew screw rscew srcew cesrw ecsrw cserw scerw escrw secrw rescw erscw rsecw srecw esrcw sercw crwse rcwse cwrse wcrse rwcse wrcse crswe rcswe csrwe scrwe rscwe srcwe cwsre wcsre cswre scwre wscre swcre rwsce wrsce rswce srwce wsrce swrce cewsr ecwsr cwesr wcesr ewcsr wecsr ceswr ecswr csewr scewr escwr secwr cwser wcser cswer scwer wscer swcer ewscr wescr eswcr sewcr wsecr swecr rewsc erwsc rwesc wresc ewrsc wersc reswc erswc rsewc srewc esrwc serwc rwsec wrsec rswec srwec wsrec swrec ewsrc wesrc eswrc sewrc wserc swerc
Note: these 'words' (valid or invalid) are all the permutations of the word crews. These words are obtained by scrambling the letters in crews.