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: ['w', 'b', 'I', '2155', 'J', 'I', '7443', '9775', 'c', 'S', 'F', '3485', 'p', '1199', 'Y', '1001']

23, 2, 9, 2155, 10, 9, 7443, 9775, 3, 19, 6, 3485, 16, 1199, 25, 1001