ccvn ccvn cvcn vccn cvcn vccn ccnv ccnv cncv nccv cncv nccv cvnc vcnc cnvc ncvc vncc nvcc cvnc vcnc cnvc ncvc vncc nvcc
Note: these 'words' (valid or invalid) are all the permutations of the word ccvn. These words are obtained by scrambling the letters in ccvn.