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: ['7565', 'd', 'a', 'H', '8285', 'V', '2097', 'B', '2905', '8315', 'd', 'u', 'c', 'y', 'G', '4327', '4471', 'l', 'V', '1687', '6037', '1617', '8693', '6035', '4833', 'Z', '2639']

7565, 4, 1, 8, 8285, 22, 2097, 2, 2905, 8315, 4, 21, 3, 25, 7, 4327, 4471, 12, 22, 1687, 6037, 1617, 8693, 6035, 4833, 26, 2639