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: ['9153', '8943', '1797', '6047', 'r', '5037', 'N', '4391', '5539', 'R', '1193', 's', '481', '5975', '3367', 'C', 'A', '1985', 'R', 'F', '2583', 'g', '7255', 'v', 'N', '5401', 'd', 'w', 'W', 'a', '9885', 'X', 'F', '4541', '4961']

9153, 8943, 1797, 6047, 18, 5037, 14, 4391, 5539, 18, 1193, 19, 481, 5975, 3367, 3, 1, 1985, 18, 6, 2583, 7, 7255, 22, 14, 5401, 4, 23, 23, 1, 9885, 24, 6, 4541, 4961