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: ['8211', '397', '3515', 'f', 'D', 'C', 'I', '6039', 'u', 'F', '5675', 'N', 'p', 'o', '2313', '7109', '5365', 'J', '825', 'B', '9769', 'm', 'v', 'h', '6583', 'P', 'V', 'H', 'S']

8211, 397, 3515, 6, 4, 3, 9, 6039, 21, 6, 5675, 14, 16, 15, 2313, 7109, 5365, 10, 825, 2, 9769, 13, 22, 8, 6583, 16, 22, 8, 19