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: ['1043', 'G', '5707', 'o', 'i', '4579', '1237', 'O', 'T', '5859', '4901', 'K', 't', '2467', '6803', '7559', 'I', '1197', 'j', '1725', 'B', 'h', '4125']

1043, 7, 5707, 15, 9, 4579, 1237, 15, 20, 5859, 4901, 11, 20, 2467, 6803, 7559, 9, 1197, 10, 1725, 2, 8, 4125