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: ['6033', '253', '6337', 'g', 'a', 'd', '2567', 'W', 'H', 'y', '1201', '6869']

6033, 253, 6337, 7, 1, 4, 2567, 23, 8, 25, 1201, 6869