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: ['L', 'Y', 'K', 's', 'w', 'Q', '9771', 'a']

12, 25, 11, 19, 23, 17, 9771, 1