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: ['4769', '1233', '7781', '8625', 'q', 'r', 'f', '8569', 'y', '9965', '7569']

4769, 1233, 7781, 8625, 17, 18, 6, 8569, 25, 9965, 7569