Detailed Instructions: 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.
Q: ['2069', '2605', 'S', '1733', 'W', '8847', 'C', '1271', '8277', '6799', '8897', '6549', 'p', 'R', '157']
A:
2069, 2605, 19, 1733, 23, 8847, 3, 1271, 8277, 6799, 8897, 6549, 16, 18, 157