hcnn chnn hncn nhcn cnhn nchn hcnn chnn hncn nhcn cnhn nchn hnnc nhnc hnnc nhnc nnhc nnhc cnnh ncnh cnnh ncnh nnch nnch
Note: these 'words' (valid or invalid) are all the permutations of the word hcnn. These words are obtained by scrambling the letters in hcnn.