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: ['5689', '7161', '329', 'd', '5577', 'M', 'h', '5871', 'u', 'y', '4915', '5135', '8921', 'q', '911', '6951', 'A']

5689, 7161, 329, 4, 5577, 13, 8, 5871, 21, 25, 4915, 5135, 8921, 17, 911, 6951, 1