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: ['D', '441', '8743', 'Y', '7411', '8353', '869', 'u', '7485', '8233', 'p', 'Y', 'n', 'A', '5239', 'e', '9093', '3565', 'x', 'J', 'g', '635', 'U', '7709', '4843', 'Q', '9525']

4, 441, 8743, 25, 7411, 8353, 869, 21, 7485, 8233, 16, 25, 14, 1, 5239, 5, 9093, 3565, 24, 10, 7, 635, 21, 7709, 4843, 17, 9525