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.

Example Input: ['6881', 'F', '4759', '5797', '4879', '5761', '9913', '8509', 'c', 'X', 'U']
Example Output: 6881, 6, 4759, 5797, 4879, 5761, 9913, 8509, 3, 24, 21

Example Input: ['155', '8891', 'F', 'T', 'C', '3477', 'L', 'l', '9191', '6815', 'c', 'M', '7365', '4757', '1439', 'B', 'Q', 'l', '4775', 'r', '7691', 'b', 'c', 'n', 'b', '4939', '1063', 'C', '1565', '3297', 'a', 'R', 'V', 'o']
Example Output: 155, 8891, 6, 20, 3, 3477, 12, 12, 9191, 6815, 3, 13, 7365, 4757, 1439, 2, 17, 12, 4775, 18, 7691, 2, 3, 14, 2, 4939, 1063, 3, 1565, 3297, 1, 18, 22, 15

Example Input: ['t', 'l', 'h', '9711', 'P', 'i', '2121', '6569']
Example Output:
20, 12, 8, 9711, 16, 9, 2121, 6569