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', '8383', 'm', 'y', '2363', 'c', 'o', '6549', 'e', '6451', 'F']

20, 8383, 13, 25, 2363, 3, 15, 6549, 5, 6451, 6