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.

Example Input: ['V', 't', '5519', '6271', '9239', 'Q', 'z', '9645', 'I', '6699']
Example Output: 22, 20, 5519, 6271, 9239, 17, 26, 9645, 9, 6699

Example Input: ['W', 'Y']
Example Output: 23, 25

Example Input: ['U', 'L', '6807', 'E', 'b']
Example Output:
21, 12, 6807, 5, 2