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: ['b', '3691', 'X', '3831', '4353', 'O', 'W', '4075', 'h', 'N', '6137', '713', 'M', '5615', 'V', '8985', 'S', '7419', 'h', 'W', '1983', 'Y', 'K', 'i', 'S', 'q', 'p', 'G', '5799', '3771', 'r', 'W', 'B', 'k', '3373', '911', '623']

2, 3691, 24, 3831, 4353, 15, 23, 4075, 8, 14, 6137, 713, 13, 5615, 22, 8985, 19, 7419, 8, 23, 1983, 25, 11, 9, 19, 17, 16, 7, 5799, 3771, 18, 23, 2, 11, 3373, 911, 623