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: ['T', 'H', 'C', '4929', '959', 'y', '7425', 'k', 'j', 'W', '8807', 'A', 'H', '6437', '5413', 'A', 'D', 'e', '1077', 'h', '127', '6193', 'X', '4097', '5535', 'o', 'L', 'G', 'f', '1717', 'G', '6059', 'B', '3245', 'h', 'b']

20, 8, 3, 4929, 959, 25, 7425, 11, 10, 23, 8807, 1, 8, 6437, 5413, 1, 4, 5, 1077, 8, 127, 6193, 24, 4097, 5535, 15, 12, 7, 6, 1717, 7, 6059, 2, 3245, 8, 2