adbot dabot abdot badot dbaot bdaot adobt daobt aodbt oadbt doabt odabt abodt baodt aobdt oabdt boadt obadt dboat bdoat dobat odbat bodat obdat adbto dabto abdto badto dbato bdato adtbo datbo atdbo tadbo dtabo tdabo abtdo batdo atbdo tabdo btado tbado dbtao bdtao dtbao tdbao btdao tbdao adotb daotb aodtb oadtb doatb odatb adtob datob atdob tadob dtaob tdaob aotdb oatdb atodb taodb otadb toadb dotab odtab dtoab tdoab otdab todab abotd baotd aobtd oabtd boatd obatd abtod batod atbod tabod btaod tbaod aotbd oatbd atobd taobd otabd toabd botad obtad btoad tboad otbad tobad dbota bdota dobta odbta bodta obdta dbtoa bdtoa dtboa tdboa btdoa tbdoa dotba odtba dtoba tdoba otdba todba botda obtda btoda tboda otbda tobda
Note: these 'words' (valid or invalid) are all the permutations of the word adbot. These words are obtained by scrambling the letters in adbot.