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: ['9501', '6185', '1389', '3645', '3933', '4069', 'r', 'a', '3625', '5329', '6645', 'f', '8279', 'z', '3541', '753', '5965', 'y', 'H', '1863', '2895', '5245', '7141', 'w', '951', 'x', 'w', 'x', 'M', '893', 'w', 'e', 'K', '5499', 'e']

9501, 6185, 1389, 3645, 3933, 4069, 18, 1, 3625, 5329, 6645, 6, 8279, 26, 3541, 753, 5965, 25, 8, 1863, 2895, 5245, 7141, 23, 951, 24, 23, 24, 13, 893, 23, 5, 11, 5499, 5