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: ['9893', 'V', 'c', '6043', 'y', 'w', '2483', 'J', '1637', '7077', '9631', '6441', 'r', 'N', 'y', '7571']

9893, 22, 3, 6043, 25, 23, 2483, 10, 1637, 7077, 9631, 6441, 18, 14, 25, 7571