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: ['751', '6157', '1501', '4993', '5801', 'Y', 'm', '8403', '9755', 'l', 'h', 'B', 'N', '369', 'o', '8101', 'g', 'D', '6685', '8843', '2991', '3927', 'h', 'I', '4667', '5857', 'h']

751, 6157, 1501, 4993, 5801, 25, 13, 8403, 9755, 12, 8, 2, 14, 369, 15, 8101, 7, 4, 6685, 8843, 2991, 3927, 8, 9, 4667, 5857, 8