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', '8619', 'v', '8727', '779', 'S', 'u', 'P', '2811', 'h', '2029', 'M', 'Y', '4547', 'B', 'J', '3157', '2629', '465']
Output:
1, 8619, 22, 8727, 779, 19, 21, 16, 2811, 8, 2029, 13, 25, 4547, 2, 10, 3157, 2629, 465