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', 'E', '9565', '4099', '6593', 'B', '7109', 'B', 'W', 'h', '579', '39', '1055', '5545', 'z', '7647', '9735', 'P']

7, 5, 9565, 4099, 6593, 2, 7109, 2, 23, 8, 579, 39, 1055, 5545, 26, 7647, 9735, 16