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: ['s', '315', 'L', '2885', 'G', 'U', '5487', 'J', '6579', '8449', '9291', 'G', 'k', 'Z', 'f', 'W', '8945', '8661', '9997', '1901', '6135', '5525', 's', 'd', 't', 'E', '8383', '6553', 'v', 'I', 'l', '8277', '1167', '3223', 'D', '9485', 's', 'N', 'b', '9681']

19, 315, 12, 2885, 7, 21, 5487, 10, 6579, 8449, 9291, 7, 11, 26, 6, 23, 8945, 8661, 9997, 1901, 6135, 5525, 19, 4, 20, 5, 8383, 6553, 22, 9, 12, 8277, 1167, 3223, 4, 9485, 19, 14, 2, 9681