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: ['N', 'm', 'J', '1375', '8329', '7053', '189', 'I', 'y', 'J', '8313', '7749', 'x', '2757', '8591', 't', 'L', '2527', 'Q', '5897', 'L', '7039']

14, 13, 10, 1375, 8329, 7053, 189, 9, 25, 10, 8313, 7749, 24, 2757, 8591, 20, 12, 2527, 17, 5897, 12, 7039