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: ['5089', '9637', 'E', '729', 'x', 'J', '2031', 'I', '565', '3755', '3457', 'N', 'l', 'c', 'X', '1659', 'c', '3319', '3411', 'R', '61', '2213', 'W', 'h', '5811', 'C', '2897']

5089, 9637, 5, 729, 24, 10, 2031, 9, 565, 3755, 3457, 14, 12, 3, 24, 1659, 3, 3319, 3411, 18, 61, 2213, 23, 8, 5811, 3, 2897