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: ['8133', 'D', 'y', 'f', 'N', '2743', 'B', 'h', '3665', 'Y', 'h']

8133, 4, 25, 6, 14, 2743, 2, 8, 3665, 25, 8