bluds lbuds bulds ublds lubds ulbds bldus lbdus bdlus dblus ldbus dlbus budls ubdls bduls dbuls udbls dubls ludbs uldbs ldubs dlubs udlbs dulbs blusd lbusd bulsd ublsd lubsd ulbsd blsud lbsud bslud sblud lsbud slbud busld ubsld bsuld sbuld usbld subld lusbd ulsbd lsubd slubd uslbd sulbd bldsu lbdsu bdlsu dblsu ldbsu dlbsu blsdu lbsdu bsldu sbldu lsbdu slbdu bdslu dbslu bsdlu sbdlu dsblu sdblu ldsbu dlsbu lsdbu sldbu dslbu sdlbu budsl ubdsl bdusl dbusl udbsl dubsl busdl ubsdl bsudl sbudl usbdl subdl bdsul dbsul bsdul sbdul dsbul sdbul udsbl dusbl usdbl sudbl dsubl sdubl ludsb uldsb ldusb dlusb udlsb dulsb lusdb ulsdb lsudb sludb usldb suldb ldsub dlsub lsdub sldub dslub sdlub udslb duslb usdlb sudlb dsulb sdulb
Note: these 'words' (valid or invalid) are all the permutations of the word bluds. These words are obtained by scrambling the letters in bluds.