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: ['3361', 'y', '7121', 'W', '9963', '1457', '3589', '327', 'R', '3689', '875']

3361, 25, 7121, 23, 9963, 1457, 3589, 327, 18, 3689, 875