foedb ofedb feodb efodb oefdb eofdb fodeb ofdeb fdoeb dfoeb odfeb dofeb fedob efdob fdeob dfeob edfob defob oedfb eodfb odefb doefb edofb deofb foebd ofebd feobd efobd oefbd eofbd fobed ofbed fboed bfoed obfed bofed febod efbod fbeod bfeod ebfod befod oebfd eobfd obefd boefd ebofd beofd fodbe ofdbe fdobe dfobe odfbe dofbe fobde ofbde fbode bfode obfde bofde fdboe dfboe fbdoe bfdoe dbfoe bdfoe odbfe dobfe obdfe bodfe dbofe bdofe fedbo efdbo fdebo dfebo edfbo defbo febdo efbdo fbedo bfedo ebfdo befdo fdbeo dfbeo fbdeo bfdeo dbfeo bdfeo edbfo debfo ebdfo bedfo dbefo bdefo oedbf eodbf odebf doebf edobf deobf oebdf eobdf obedf boedf ebodf beodf odbef dobef obdef bodef dboef bdoef edbof debof ebdof bedof dbeof bdeof
Note: these 'words' (valid or invalid) are all the permutations of the word foedb. These words are obtained by scrambling the letters in foedb.