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: ['M', 'h', 'W', '9627', 'V', 'A', 'J', '211', '9271', '1471', '405']

13, 8, 23, 9627, 22, 1, 10, 211, 9271, 1471, 405