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: ['7833', '7159', 'O', 'W', 'L', '3625', '5685', '4171', 'V', 'x', '4933', '7991', '8593', 's', 'L', '3279', '5475', '209', 'N', 'p', '5875', 'X', 'x', '1463', '5875', 'M', 'J', '449', 'L', 'U', '4763', '1401', '3955', '2643', 'V', '4055', '595', 'v', 'K']

7833, 7159, 15, 23, 12, 3625, 5685, 4171, 22, 24, 4933, 7991, 8593, 19, 12, 3279, 5475, 209, 14, 16, 5875, 24, 24, 1463, 5875, 13, 10, 449, 12, 21, 4763, 1401, 3955, 2643, 22, 4055, 595, 22, 11