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: ['e', 'h', 'c', '3537', 'b', 'B', '8253', 'W', '7959', '8035', 'J', '2865', '5295', '8973']

5, 8, 3, 3537, 2, 2, 8253, 23, 7959, 8035, 10, 2865, 5295, 8973