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: ['5383', 'k', '1349', '637', 'g', 'v', '8077', '9117', 'C', '549', 'b', '1293', 'i', '8459', 's', 'Z', 'g', 'p', 'd', 'z', '4391', '5757', '7865', '8095', '8275', '4311', 'X', 'O', 'O', 'i', 'W', 'R', 'E', 'J']

5383, 11, 1349, 637, 7, 22, 8077, 9117, 3, 549, 2, 1293, 9, 8459, 19, 26, 7, 16, 4, 26, 4391, 5757, 7865, 8095, 8275, 4311, 24, 15, 15, 9, 23, 18, 5, 10