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: ['I', 'Q', 'F', 'j', '5037', 'h', '3549', '5669', 'U', 'Q', '7917', 'a', 'R', 'y', '4211', 'm', 'v', '6211', '2703', 'D', 'Z', '1381', '1343', '2113', '3481']

9, 17, 6, 10, 5037, 8, 3549, 5669, 21, 17, 7917, 1, 18, 25, 4211, 13, 22, 6211, 2703, 4, 26, 1381, 1343, 2113, 3481