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: ['Q', '6789', '355', '4575', 'E', 'h', 'q', 'J', '8845', 'T', '2379', '9393', '8949', 'A', '4563', '163', 'B', 'F', '4945', 'F', '5539', 'Y', '3209', '253', 'b', '1333', 'G', '6301', '6097', 'x', '6203', 'S']

17, 6789, 355, 4575, 5, 8, 17, 10, 8845, 20, 2379, 9393, 8949, 1, 4563, 163, 2, 6, 4945, 6, 5539, 25, 3209, 253, 2, 1333, 7, 6301, 6097, 24, 6203, 19