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: ['5677', '2909', '2225', '6425', '4393', '8537', '9169', '3143', 'O', 'B', 'J', 'd', 'x', '1945', 'q', '2735']

5677, 2909, 2225, 6425, 4393, 8537, 9169, 3143, 15, 2, 10, 4, 24, 1945, 17, 2735