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: ['A', '3283', 'o', 'y', '3907', '2153', '8239', '3263', 'b', 'k', '2527']

1, 3283, 15, 25, 3907, 2153, 8239, 3263, 2, 11, 2527