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: ['H', '6775', '675', '4477', '329', 'E', '6477', '1315', '9737', 'x', 's', '3515', '9573', 'O', '6503', 'N', '5955', '9491', '1391', 'V', '5735', 'F', '9941', '6997', 'P', '525', '5021', 'H', 'Y', 'J', 'm', '3697', '3113', 't']

8, 6775, 675, 4477, 329, 5, 6477, 1315, 9737, 24, 19, 3515, 9573, 15, 6503, 14, 5955, 9491, 1391, 22, 5735, 6, 9941, 6997, 16, 525, 5021, 8, 25, 10, 13, 3697, 3113, 20