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: ['x', '8157', '5007', '7075', '8585', '8095', 'I', 'n', '3005', 'O', 'j', '6443', '7245', '3713', 'N', '8617', '1123', 'S', '9847', '4171', '4655', 'j', '1869', 'g', '9013', '9209', '7913', 'a', '337', 't', 'c']

24, 8157, 5007, 7075, 8585, 8095, 9, 14, 3005, 15, 10, 6443, 7245, 3713, 14, 8617, 1123, 19, 9847, 4171, 4655, 10, 1869, 7, 9013, 9209, 7913, 1, 337, 20, 3