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: ['565', '3625', '3721', 'x', 'T', '4243', '8889', 'C', 'q', '913', 'G', '8385', 'U', 'f', 'a', 'p', 'M', 'W', 'H', '763', '9447', 'l', '8949', '1391', '4319', 'K', '2325', '4317', 'D', '4655', '4509', '6561', '9901']

565, 3625, 3721, 24, 20, 4243, 8889, 3, 17, 913, 7, 8385, 21, 6, 1, 16, 13, 23, 8, 763, 9447, 12, 8949, 1391, 4319, 11, 2325, 4317, 4, 4655, 4509, 6561, 9901