redbe erdbe rdebe drebe edrbe derbe rebde erbde rbede brede ebrde berde rdbee drbee rbdee brdee dbree bdree edbre debre ebdre bedre dbere bdere redeb erdeb rdeeb dreeb edreb dereb reedb eredb reedb eredb eerdb eerdb rdeeb dreeb redeb erdeb dereb edreb ederb deerb eedrb eedrb deerb ederb rebed erbed rbeed breed ebred bered reebd erebd reebd erebd eerbd eerbd rbeed breed rebed erbed bered ebred eberd beerd eebrd eebrd beerd eberd rdbee drbee rbdee brdee dbree bdree rdebe drebe redbe erdbe derbe edrbe rbede brede rebde erbde berde ebrde dbere bdere debre edbre bedre ebdre edber deber ebder beder dbeer bdeer edebr deebr eedbr eedbr deebr edebr ebedr beedr eebdr eebdr beedr ebedr dbeer bdeer deber edber beder ebder
Note: these 'words' (valid or invalid) are all the permutations of the word redbe. These words are obtained by scrambling the letters in redbe.