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: ['1689', 'N', 'I', '4547', '7635', '293', '3253', 'J', 'X', '2289', 'B', 'V', 'P', 'O', '1087', '5757', 'Q', 'R', 'Z', 'o', '1881', 'h', 'p', 'E', 'W', '2559', '8637', '4951', '2799', 'q', 'Q', 'R', '5393', '9843', 'o', 'G', '89']

1689, 14, 9, 4547, 7635, 293, 3253, 10, 24, 2289, 2, 22, 16, 15, 1087, 5757, 17, 18, 26, 15, 1881, 8, 16, 5, 23, 2559, 8637, 4951, 2799, 17, 17, 18, 5393, 9843, 15, 7, 89