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: ['x', '8153', 'I', '9247', 's', '4655', '1597', 'y', '1429', 'e', 'I', '4615', '8169', '4979', 'o', 'z', '5595', '8403', 'W', 'B', '8487', '187', 's', '3825']

24, 8153, 9, 9247, 19, 4655, 1597, 25, 1429, 5, 9, 4615, 8169, 4979, 15, 26, 5595, 8403, 23, 2, 8487, 187, 19, 3825