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: ['t', '4819', 'F', 'b', '7021', 'T', 'Y', 'e', '2713', '9945', '1399', '5573', '649', 'e', 'A', 'T', 'V', 'i', 'B', 'i', '5549', 'T', 'E', '4111', 'z', 'v', '8657', '9393', '3429', '1429', 'W', 'v']

20, 4819, 6, 2, 7021, 20, 25, 5, 2713, 9945, 1399, 5573, 649, 5, 1, 20, 22, 9, 2, 9, 5549, 20, 5, 4111, 26, 22, 8657, 9393, 3429, 1429, 23, 22