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: ['A', '1557', 'S', '2777', '8387', '9173', '8543', 'M', '5663', '4153', '1115', 'X', '1175', '8329', '2333', '1225', '4485']
A:
1, 1557, 19, 2777, 8387, 9173, 8543, 13, 5663, 4153, 1115, 24, 1175, 8329, 2333, 1225, 4485