calx aclx clax lcax alcx lacx caxl acxl cxal xcal axcl xacl clxa lcxa cxla xcla lxca xlca alxc laxc axlc xalc lxac xlac
Note: these 'words' (valid or invalid) are all the permutations of the word calx. These words are obtained by scrambling the letters in calx.