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: ['J', '2095', '791', 'V', 'S', '5893', 'D', '6347', 'z', '1163', '209']

10, 2095, 791, 22, 19, 5893, 4, 6347, 26, 1163, 209