dddg dddg dddg dddg dddg dddg ddgd ddgd dgdd gddd dgdd gddd ddgd ddgd dgdd gddd dgdd gddd ddgd ddgd dgdd gddd dgdd gddd
Note: these 'words' (valid or invalid) are all the permutations of the word dddg. These words are obtained by scrambling the letters in dddg.