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: ['b', 'k', 'F', '7103', 'k', '8527', '6371', 'q', 'f', 'k', '7189', '3965']

2, 11, 6, 7103, 11, 8527, 6371, 17, 6, 11, 7189, 3965