Detailed Instructions: 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.
Q: ['5427', '3539', '4769', 'r', '9249', '2581', '207', '4169', '6863', 'Z', '6199', 'M', 'r']
A:
5427, 3539, 4769, 18, 9249, 2581, 207, 4169, 6863, 26, 6199, 13, 18