bourd oburd buord ubord oubrd uobrd borud obrud broud rboud orbud robud burod ubrod bruod rbuod urbod rubod ourbd uorbd orubd roubd urobd ruobd boudr obudr buodr ubodr oubdr uobdr bodur obdur bdour dbour odbur dobur budor ubdor bduor dbuor udbor dubor oudbr uodbr odubr doubr udobr duobr bordu obrdu brodu rbodu orbdu robdu bodru obdru bdoru dboru odbru dobru brdou rbdou bdrou dbrou rdbou drbou ordbu rodbu odrbu dorbu rdobu drobu burdo ubrdo brudo rbudo urbdo rubdo budro ubdro bduro dburo udbro dubro brduo rbduo bdruo dbruo rdbuo drbuo urdbo rudbo udrbo durbo rdubo drubo ourdb uordb orudb roudb urodb ruodb oudrb uodrb odurb dourb udorb duorb ordub rodub odrub dorub rdoub droub urdob rudob udrob durob rduob druob
Note: these 'words' (valid or invalid) are all the permutations of the word bourd. These words are obtained by scrambling the letters in bourd.