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: ['6031', 'l', '4893', 'q', 'A', 'X', '3191', '2071', 'K', '75', '6565', '1551', 'a', 'g', '9431', '9545', '7863', '341', 'D', 'O', '3041', '8017', '3421', 'D', '8387', '5545', 'X', 'f', '7427', '6375', 'Q', 'x', 'Y', 'C', 'X']

6031, 12, 4893, 17, 1, 24, 3191, 2071, 11, 75, 6565, 1551, 1, 7, 9431, 9545, 7863, 341, 4, 15, 3041, 8017, 3421, 4, 8387, 5545, 24, 6, 7427, 6375, 17, 24, 25, 3, 24