wurst uwrst wrust rwust urwst ruwst wusrt uwsrt wsurt swurt uswrt suwrt wrsut rwsut wsrut swrut rswut srwut urswt ruswt usrwt surwt rsuwt sruwt wurts uwrts wruts rwuts urwts ruwts wutrs uwtrs wturs twurs utwrs tuwrs wrtus rwtus wtrus twrus rtwus trwus urtws rutws utrws turws rtuws truws wustr uwstr wsutr swutr uswtr suwtr wutsr uwtsr wtusr twusr utwsr tuwsr wstur swtur wtsur twsur stwur tswur ustwr sutwr utswr tuswr stuwr tsuwr wrstu rwstu wsrtu swrtu rswtu srwtu wrtsu rwtsu wtrsu twrsu rtwsu trwsu wstru swtru wtsru twsru stwru tswru rstwu srtwu rtswu trswu strwu tsrwu urstw rustw usrtw surtw rsutw srutw urtsw rutsw utrsw tursw rtusw trusw ustrw sutrw utsrw tusrw sturw tsurw rstuw srtuw rtsuw trsuw struw tsruw
Note: these 'words' (valid or invalid) are all the permutations of the word wurst. These words are obtained by scrambling the letters in wurst.