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: ['G', '6823', 'q', '2751', 'e', '8609', '7343', '6051', 'O', 'm', 'F', 'z', 'n', 'Q', 'F', 'i', 'p', 'o', 'F', '6139', 'h', '721', 'w', 'F', '2371', '8505', 'F', '6135', 'm', 'e', 'J']

7, 6823, 17, 2751, 5, 8609, 7343, 6051, 15, 13, 6, 26, 14, 17, 6, 9, 16, 15, 6, 6139, 8, 721, 23, 6, 2371, 8505, 6, 6135, 13, 5, 10