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: ['G', '4737', 'h', 'V', '7513', 'e', 'F', 'q', '191', 'x', 'W', 'h', '49', 'L', 'a', '6105', 'C']

7, 4737, 8, 22, 7513, 5, 6, 17, 191, 24, 23, 8, 49, 12, 1, 6105, 3