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: ['F', '1537', '7187', '1285', 'f', '8411', 'h', '2159', '3833', '9247']

6, 1537, 7187, 1285, 6, 8411, 8, 2159, 3833, 9247