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: ['Y', 'z', 'A', '2733', 'e', 'j', 'E', 'Z', '6403', '5375', 'Y', 'S', 'u', 'Z', 'y', 'L', 'j', '1511', 'T', '9451', 'x', 'B', '7023', 'f', 'p', '3219', 'j', 'r', '3501', 'H', '3485', '3421', 'x', '6483', 'g', 'f', 'E', 'e', '5809']

25, 26, 1, 2733, 5, 10, 5, 26, 6403, 5375, 25, 19, 21, 26, 25, 12, 10, 1511, 20, 9451, 24, 2, 7023, 6, 16, 3219, 10, 18, 3501, 8, 3485, 3421, 24, 6483, 7, 6, 5, 5, 5809