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: ['2043', '8225', 'Z', '2079', '885', '3623', 'H', '8767', '9763', 'f', 't', '4715', 'D', 'E', '4149', 'e', '9863', '6979', '1185', '4043', 'u', 'P', 'o', '6459', '8433', 'u', '1629', 'o', '7107', 'X', '3825', 'f', '3817', '8265', 'B', '497']

2043, 8225, 26, 2079, 885, 3623, 8, 8767, 9763, 6, 20, 4715, 4, 5, 4149, 5, 9863, 6979, 1185, 4043, 21, 16, 15, 6459, 8433, 21, 1629, 15, 7107, 24, 3825, 6, 3817, 8265, 2, 497