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: ['Y', '2047', '3477', '4733', 'H', '6083', '5883', '8685', '7925', '3467', 'I', 'r', '6971', 'd', 'Q', '8647', 'g', 'C', '9929', '8739', '7207', 'B', '5017', '7047', '2047', 'L', '9109', 'u', 'w', 'C', '4445', 'I', '889', 'w', 'K', '4223', '547', '3539', 'j']

25, 2047, 3477, 4733, 8, 6083, 5883, 8685, 7925, 3467, 9, 18, 6971, 4, 17, 8647, 7, 3, 9929, 8739, 7207, 2, 5017, 7047, 2047, 12, 9109, 21, 23, 3, 4445, 9, 889, 23, 11, 4223, 547, 3539, 10