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: ['3493', '3591', '1639', 'P', '5139', 'G', '813', 'G', 'k', '5395', 'X', 'N', 'q', 'm', 'i', 'K', 'b', 'v', '7571', '8561', '9477', '8349', '6503', 'Z', '6505', '7253', '757', '9345', 'y', 'v', '9797', '7659', '9399', 'v', 'y']

3493, 3591, 1639, 16, 5139, 7, 813, 7, 11, 5395, 24, 14, 17, 13, 9, 11, 2, 22, 7571, 8561, 9477, 8349, 6503, 26, 6505, 7253, 757, 9345, 25, 22, 9797, 7659, 9399, 22, 25