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: ['s', 'o', 'l', 'I', '3283', '6231', 'b', '8047', '8339', '7597', 'o', '6553', '6697', '3835', '6369', '9907', '2477', '3927', '5223', 'Q', 'b', '4859']

19, 15, 12, 9, 3283, 6231, 2, 8047, 8339, 7597, 15, 6553, 6697, 3835, 6369, 9907, 2477, 3927, 5223, 17, 2, 4859