qued uqed qeud equd ueqd euqd qude uqde qdue dque udqe duqe qedu eqdu qdeu dqeu edqu dequ uedq eudq udeq dueq eduq deuq
Note: these 'words' (valid or invalid) are all the permutations of the word qued. These words are obtained by scrambling the letters in qued.