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', 'L', '9043', 'N', 'd', '4393', '2301', '3799', '9567', '6301', '9135', '2977', 'J', 'e', 'x']

10, 12, 9043, 14, 4, 4393, 2301, 3799, 9567, 6301, 9135, 2977, 10, 5, 24