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: ['u', '9467', '8341', '6063', 'M', 'p', 's', 'F', '8193', 'z', '6271']

21, 9467, 8341, 6063, 13, 16, 19, 6, 8193, 26, 6271