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.

Example Input: ['u', 'P', 'n', 'P', '537', '6431', 'u', 'Y']
Example Output: 21, 16, 14, 16, 537, 6431, 21, 25

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

Example Input: ['2835', 's', 'Z', 'B', 't', '975', '3775', 'h', 'M', '1687', '2107', '5371']
Example Output:
2835, 19, 26, 2, 20, 975, 3775, 8, 13, 1687, 2107, 5371