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: ['3285', 'v', 'F', '9451', 'L', 'o', 'M', 'M', 'H', '4531', 'I', 'S', '6117', '5157', 'm', '7769', 'h', 'L', '4525', '5235', '7319', 'f', '7221', '503', 'A']

3285, 22, 6, 9451, 12, 15, 13, 13, 8, 4531, 9, 19, 6117, 5157, 13, 7769, 8, 12, 4525, 5235, 7319, 6, 7221, 503, 1