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: ['2217', '5893', '9039', 'C', '815', 'L', '1661', '8233', '2011', '8899', 'V', '8797', '1779', '3473', 'e', '6571', 'E', 'W', 'W', 'D', '7191', 'z', 't', 'L', '4451', '3799', 'W', '2771', '8725', 'V', '6889', 'P', '8263', 'e', '19', 'n', '149']

2217, 5893, 9039, 3, 815, 12, 1661, 8233, 2011, 8899, 22, 8797, 1779, 3473, 5, 6571, 5, 23, 23, 4, 7191, 26, 20, 12, 4451, 3799, 23, 2771, 8725, 22, 6889, 16, 8263, 5, 19, 14, 149