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: ['9277', '5789', 'Z', '6731', '1717', 'l', 'R', 'B', '9175', '7859', '3015', '7511', 'e', '5387']

9277, 5789, 26, 6731, 1717, 12, 18, 2, 9175, 7859, 3015, 7511, 5, 5387