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: ['7753', '8177', '665', 'Y', 'R', '1141', 'o', '8097', '559', '2563', '5949', 'G', 'B', '5167', 'O', '1491', 'e', 'G', 'l', 'h', '5423', 'm', '3077', '8337', 'T', '6877', '6507', 'V', '6651', 'A']

7753, 8177, 665, 25, 18, 1141, 15, 8097, 559, 2563, 5949, 7, 2, 5167, 15, 1491, 5, 7, 12, 8, 5423, 13, 3077, 8337, 20, 6877, 6507, 22, 6651, 1