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: ['2847', '1837', '5799', '807', '9527', '4769', 'E', '311', 'N', '1885', 'm', 'b', 'd', '8725', '2357', 'B', 'C', 'h', '9869', '4523', 'T', '9975', 'd', '4553', '8191', '8235', '9917', 's', 'G', 'B', 'v', 'V', '2955', 'e', '829', 'V', '8833', '3093', 'Y', '5873']

2847, 1837, 5799, 807, 9527, 4769, 5, 311, 14, 1885, 13, 2, 4, 8725, 2357, 2, 3, 8, 9869, 4523, 20, 9975, 4, 4553, 8191, 8235, 9917, 19, 7, 2, 22, 22, 2955, 5, 829, 22, 8833, 3093, 25, 5873