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: ['m', 'i', '6477', '2549', 'Z', 'j', '3159', '541', '837', '7739', '6923', 'X', 'o', 'r', '4021', '1757', '4511', 'x', '4103', 'P', '6007', '8797', '2021', 'N', '4445', '7155', '7021', 'v', 'M', 'v', '7693', '3479', 'T', 'j', '9365']

13, 9, 6477, 2549, 26, 10, 3159, 541, 837, 7739, 6923, 24, 15, 18, 4021, 1757, 4511, 24, 4103, 16, 6007, 8797, 2021, 14, 4445, 7155, 7021, 22, 13, 22, 7693, 3479, 20, 10, 9365