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.

['r', '8349', 'v', 'B', '6385', '6105', '3859', '3535', '8279', 'Z', '4157', 'N']
18, 8349, 22, 2, 6385, 6105, 3859, 3535, 8279, 26, 4157, 14

['O', '6049', '4915', '1573', '719', '2061', 'O', 'n', '6689', 'J', '4985', 'r', 'q', '6617', 'k', '2333', '183', '4549', '6053', '1075', '737', '6465', '5421']
15, 6049, 4915, 1573, 719, 2061, 15, 14, 6689, 10, 4985, 18, 17, 6617, 11, 2333, 183, 4549, 6053, 1075, 737, 6465, 5421

['n', 'e', '9429', 'k', '8879']
14, 5, 9429, 11, 8879