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: ['v', 'o', '5389', 'N', '8541', '7363', 'g', '4635', '7299', 'D', '237', 'r', '7231', '6241', 'e', '1541', 'a', '2365', 'X']

22, 15, 5389, 14, 8541, 7363, 7, 4635, 7299, 4, 237, 18, 7231, 6241, 5, 1541, 1, 2365, 24