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: ['2985', 'Z', '1059', '1761', '3601', '4019', 'o', 'R', '2877', 'n', '4509', '3241', 'Q', 'A', '5827', '8753', 'Z']

2985, 26, 1059, 1761, 3601, 4019, 15, 18, 2877, 14, 4509, 3241, 17, 1, 5827, 8753, 26