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: ['5809', 'I', 'G', 'F', '2935', 'A', '1387', 'h', '1563', '7321', 'x', '2365', 'k', '2037', '489', 'D', 'o', '6389', 's', 'l', 'p', '7409', 'T', '5613', 'F', 'B', '8147', 'H', 's', '5007', 'a', '9213', '7861']

5809, 9, 7, 6, 2935, 1, 1387, 8, 1563, 7321, 24, 2365, 11, 2037, 489, 4, 15, 6389, 19, 12, 16, 7409, 20, 5613, 6, 2, 8147, 8, 19, 5007, 1, 9213, 7861