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: ['q', '9343', '9489', 's', '6751', '7151', 'U', '5081', '4195', '6113', '2715', 'c', 'M', 'M', '9503', 'a', '887', '4737', '3095', 'J', '3595', 'j', '6175', 'd', '1997', '7053', '2347', '8497', 'S', '5585']

17, 9343, 9489, 19, 6751, 7151, 21, 5081, 4195, 6113, 2715, 3, 13, 13, 9503, 1, 887, 4737, 3095, 10, 3595, 10, 6175, 4, 1997, 7053, 2347, 8497, 19, 5585