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: ['g', '5531', '9567', '2887', 'e', '4331', '6375', '1451', 'c', 'u', '4027', '6883', 'Z', '1827', '9245', '8063', 'v', '1383', 'r', 'K', 'Y', 'F', 'S', '3573', 'm', '9309', 's', '3103', 'b', 'S', 's', 'U', 'Z', 'h', 'C', '4297', '6909']

7, 5531, 9567, 2887, 5, 4331, 6375, 1451, 3, 21, 4027, 6883, 26, 1827, 9245, 8063, 22, 1383, 18, 11, 25, 6, 19, 3573, 13, 9309, 19, 3103, 2, 19, 19, 21, 26, 8, 3, 4297, 6909