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: ['5549', '11', '3533', '2019', '4403', '227', '7635', '2229', 'X', 'W', '3547', 'y']

5549, 11, 3533, 2019, 4403, 227, 7635, 2229, 24, 23, 3547, 25