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: ['I', '2095', 'L', 'Z', '7277', 'n', 'G', '1225', 'E', 'y', '6103', '579', 'o', '2513', 'L', '9385', 'y', 'p', '3547', '8123', '8471', '6067', 'p', '8293', 'U', '345', '5503', 'A', 'J']

9, 2095, 12, 26, 7277, 14, 7, 1225, 5, 25, 6103, 579, 15, 2513, 12, 9385, 25, 16, 3547, 8123, 8471, 6067, 16, 8293, 21, 345, 5503, 1, 10