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: ['K', '1799', 'M', '3003', '6357', '3193', 'e', 'a', 'g', 'R', 'T', '5869', 't', 'X', 'x', 'K', 's', 'b', '1791', 'j', '6737', '8163', 'B', '9451', 'c', 'b', '8961', '7831', 'l', '3155', 'd', '5271', '2715', '5869', 'F', '2727', '3599', '3391', 'T']

11, 1799, 13, 3003, 6357, 3193, 5, 1, 7, 18, 20, 5869, 20, 24, 24, 11, 19, 2, 1791, 10, 6737, 8163, 2, 9451, 3, 2, 8961, 7831, 12, 3155, 4, 5271, 2715, 5869, 6, 2727, 3599, 3391, 20