Definition: 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.
Input: ['G', 'z', '5627', 'C', '327', '7565', '3807', '7839', 'o', '373', 'E', 'W', '8947', 'D', '1199', 'X', '2369', '7103', '6923', 'Q', 'L', 'o']

7, 26, 5627, 3, 327, 7565, 3807, 7839, 15, 373, 5, 23, 8947, 4, 1199, 24, 2369, 7103, 6923, 17, 12, 15