In this task, you are given an input list A. You need to convert all the alphabets in the list with a number representing their position in the English alphabet. E.g., replace A by 1, B by 2, a by 1, b by 2, and so on.

['4175', 'm', 'Q', 'u', '4507', 'F', 'q', 'H', '5245', '9217', 'C', 'S', 'x', 'J', '7433', '4771', '1845', '5591', 'B', '1005', 'F', 'c', 'K']
4175, 13, 17, 21, 4507, 6, 17, 8, 5245, 9217, 3, 19, 24, 10, 7433, 4771, 1845, 5591, 2, 1005, 6, 3, 11

['x', '9709', '1533', 'w', 'M', 'z', '7459', '9617', '6763', '729', 'F', '8815', '363', '3349', '5129', 'L', 'L']
24, 9709, 1533, 23, 13, 26, 7459, 9617, 6763, 729, 6, 8815, 363, 3349, 5129, 12, 12

['r', '9561', 'N', 'b', '471']

18, 9561, 14, 2, 471