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: ['v', 'X', 'i', '8627', 'U', 'L', 'L', 't', '717', 'O', 'a', '4009', '7839', '6979', '2979', 'e', 'n', 'N', '5517', 'v', '143', '4041', 'h', 'F', 'Q', 'U', 'i', 'X', 'y', '7713', 'X', 'F', 'H', 'B', 'X', 'b', '2815', '2495', 'D', '5307']

22, 24, 9, 8627, 21, 12, 12, 20, 717, 15, 1, 4009, 7839, 6979, 2979, 5, 14, 14, 5517, 22, 143, 4041, 8, 6, 17, 21, 9, 24, 25, 7713, 24, 6, 8, 2, 24, 2, 2815, 2495, 4, 5307