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: ['J', 'G', 'c', 'A', '1249', '6171', '9263', '4117', '9809', 'W', '3277', 'q', 'T']

10, 7, 3, 1, 1249, 6171, 9263, 4117, 9809, 23, 3277, 17, 20