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: ['8253', 'd', '7813', '4659', '5303', '455', 'E', '6663', '7247', '8269', 'X', '9693', 'd', '6111', 'h', 'l', 'i', 'k', 'x', 'z', '4857', '2665', 'v', 'y', '9955', '2801', 'S', '589']

8253, 4, 7813, 4659, 5303, 455, 5, 6663, 7247, 8269, 24, 9693, 4, 6111, 8, 12, 9, 11, 24, 26, 4857, 2665, 22, 25, 9955, 2801, 19, 589