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: ['9235', '7275', '549', 'k', 'X', 'v', '6577', 'N', 'j', 'S', 'C', '6437', 'l']

9235, 7275, 549, 11, 24, 22, 6577, 14, 10, 19, 3, 6437, 12