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: ['s', '7331', '8643', 'z', 'J', '6141', '6597', 'F', '95']

19, 7331, 8643, 26, 10, 6141, 6597, 6, 95