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: ['8375', 'g', 'X', '8671', 'k', '6649', 'H', '5581', 'a', 'S', 'K', 'R', 'G', '1119', '1853', 'G', '5659', '6111', 'U', 'j', '8719', '9669', 'h', 'P', '3351', '9143', 'e']

8375, 7, 24, 8671, 11, 6649, 8, 5581, 1, 19, 11, 18, 7, 1119, 1853, 7, 5659, 6111, 21, 10, 8719, 9669, 8, 16, 3351, 9143, 5