Answer the following questions about Hamming code (1) If you make a Hamming code with a block length of 63 bits, how many check bits do you have? (2) Is each check bit responsible for checking a few bits? (including yourself) (3) If you follow the method of "parity bit positions: 1, 2, 4. message bits at positions: 3, 5, 6, 7." , where should these check digits be placed?