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: ['5327', 'q', 'e', 't', '3475', '795', 'R', '4127', 'R', 'C', '4897', 'F', 'q', 'E', '495', '3523', '8283', 't', '5999', '7639', '7665', 'T', 'g', '8297', 'e', '7355', '9191', 'r', 's', '245', '2045', '6829', 'O', '2979', '3515', '5901', 'N', 'G', '6569', 'V']

5327, 17, 5, 20, 3475, 795, 18, 4127, 18, 3, 4897, 6, 17, 5, 495, 3523, 8283, 20, 5999, 7639, 7665, 20, 7, 8297, 5, 7355, 9191, 18, 19, 245, 2045, 6829, 15, 2979, 3515, 5901, 14, 7, 6569, 22