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: ['O', 'P', 'd', 'V', '8977', '4339', '7039', '6583', 's', '6557', '6015', 'Y', 'I', 'P', 'L', '6553', 'q', 'n', 'y', 'E', 'j', '5275', '2245', '2109', '1603', '8577', 'h', '5995', 'N', 'u', '5309', 'c', 'w', 'D', '3003', 'K', '4927', '8219', '9617']

15, 16, 4, 22, 8977, 4339, 7039, 6583, 19, 6557, 6015, 25, 9, 16, 12, 6553, 17, 14, 25, 5, 10, 5275, 2245, 2109, 1603, 8577, 8, 5995, 14, 21, 5309, 3, 23, 4, 3003, 11, 4927, 8219, 9617