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: ['H', '2547', '6785', 'T', 'W', '9627', '9065', 'z', 'f', 'h', '6427', '9329', 'P', 'h', 'C', '2091', 'L', '9845', 'P', 'n', 'X', 'B', 'W', 'e', 'X', 'Q', '8059', 'J', '811', 'g', '8523', '3273', 'F', '3459', 'g', '4539', '2787']

8, 2547, 6785, 20, 23, 9627, 9065, 26, 6, 8, 6427, 9329, 16, 8, 3, 2091, 12, 9845, 16, 14, 24, 2, 23, 5, 24, 17, 8059, 10, 811, 7, 8523, 3273, 6, 3459, 7, 4539, 2787