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: ['7107', '2283', '2877', '6137', 'K', '4629', '2197', 'd', '6397', '977', '357', 'B', 'C', '2277', '3241', '7523', 'X', '7789', '7235', 'Q', '4487', 'R', 'G', '4831', 'n', '5211', 'z', '9957', 'W', 't', 's', 'm', '8001', 'y', 'O']

7107, 2283, 2877, 6137, 11, 4629, 2197, 4, 6397, 977, 357, 2, 3, 2277, 3241, 7523, 24, 7789, 7235, 17, 4487, 18, 7, 4831, 14, 5211, 26, 9957, 23, 20, 19, 13, 8001, 25, 15