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: ['j', 'o', 'J', 'S', 'l', '8359', '1883', 'b', '7905', 'l', '8095', 'b', '183', 'a', 'e', 'S', '2547', 'Y', '4997', 'U', 'H', '6999', 'M', '3157', '7205', 'D', '315', 'M', 'G', '6129', '7469', 'v', '2527', 't', 'x', 'P', 'L', '8717', '8715', '3417']

10, 15, 10, 19, 12, 8359, 1883, 2, 7905, 12, 8095, 2, 183, 1, 5, 19, 2547, 25, 4997, 21, 8, 6999, 13, 3157, 7205, 4, 315, 13, 7, 6129, 7469, 22, 2527, 20, 24, 16, 12, 8717, 8715, 3417