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: ['Y', '9267', 'Z', '6993', 'V', 'U', '3147', 'i', 'D', '4507', 'N', 'V', 'h', '5161', 'Q', 'C', 'b', '2813', '5873', 'K', '7819', 'y', 'e', '4547']

25, 9267, 26, 6993, 22, 21, 3147, 9, 4, 4507, 14, 22, 8, 5161, 17, 3, 2, 2813, 5873, 11, 7819, 25, 5, 4547