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: ['m', '8409', 'X', '6165', '6909', 'O', 'c', 'h', '4709', 'x', 'l', '3465', 'b', '2589', 'H', '6587', 'P', 'P', '2837', '1961', '1637', '9391', 'm', '4817', 'x', 'e', '3203', 'q', 'a', 'W', '7191', 'S', 'w', '8837']

13, 8409, 24, 6165, 6909, 15, 3, 8, 4709, 24, 12, 3465, 2, 2589, 8, 6587, 16, 16, 2837, 1961, 1637, 9391, 13, 4817, 24, 5, 3203, 17, 1, 23, 7191, 19, 23, 8837