blued lbued buled ubled lubed ulbed bleud lbeud belud eblud lebud elbud bueld ubeld beuld ebuld uebld eubld luebd ulebd leubd elubd uelbd eulbd blude lbude bulde ublde lubde ulbde bldue lbdue bdlue dblue ldbue dlbue budle ubdle bdule dbule udble duble ludbe uldbe ldube dlube udlbe dulbe bledu lbedu beldu ebldu lebdu elbdu bldeu lbdeu bdleu dbleu ldbeu dlbeu bedlu ebdlu bdelu dbelu edblu deblu ledbu eldbu ldebu dlebu edlbu delbu buedl ubedl beudl ebudl uebdl eubdl budel ubdel bduel dbuel udbel dubel bedul ebdul bdeul dbeul edbul debul uedbl eudbl udebl duebl edubl deubl luedb uledb leudb eludb ueldb euldb ludeb uldeb ldueb dlueb udleb duleb ledub eldub ldeub dleub edlub delub uedlb eudlb udelb duelb edulb deulb
Note: these 'words' (valid or invalid) are all the permutations of the word blued. These words are obtained by scrambling the letters in blued.