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: ['w', '3393', 'y', '7359', '425', 'T', 'Q', 'u', '7487', 'G', '1083', '8549', 'q', '7385', '4501', '4523', 'z', '9999', '5551', 'K', '4235', 's', 'X', '203', 'u', '731', 'o', '2903', 'p', 'B', '3199']

23, 3393, 25, 7359, 425, 20, 17, 21, 7487, 7, 1083, 8549, 17, 7385, 4501, 4523, 26, 9999, 5551, 11, 4235, 19, 24, 203, 21, 731, 15, 2903, 16, 2, 3199