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: ['B', 'z', '3345', 'n', 'E', '1329', 'c', 'G', 'n', '4519', 'J', 'r', 'C', 'C', 'y', 'g', 'm', 's', 'k', 'G', '4315', '8195', 'r', 'r', 'F', '5113', 'Y', '5907', 'L', '7943', 'D', '9443', 'b', 'Z', '8515', '179', 'M', 'u']

2, 26, 3345, 14, 5, 1329, 3, 7, 14, 4519, 10, 18, 3, 3, 25, 7, 13, 19, 11, 7, 4315, 8195, 18, 18, 6, 5113, 25, 5907, 12, 7943, 4, 9443, 2, 26, 8515, 179, 13, 21