INVALID_CODE
#define IS_INVALID_CODE(c) ((c) == INVALID_CODE)
r.e = INVALID_CODE; /* out of values--invalid code */
#define IS_INVALID_CODE(c) ((c) == INVALID_CODE)
3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 16, INVALID_CODE, INVALID_CODE};
3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 0, INVALID_CODE, INVALID_CODE};
12, 12, 13, 13, INVALID_CODE, INVALID_CODE};