TASK 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.
PROBLEM: ['i', '1441', '397', 'S', '8833', '9829', 'g', 'U', 'W', '9651', '9403', '7013', '8445', 'D', 'M']

SOLUTION: 9, 1441, 397, 19, 8833, 9829, 7, 21, 23, 9651, 9403, 7013, 8445, 4, 13

PROBLEM: ['2299', 'f', '1479', '8401', 'g', 'l', 'k', '379', '8951', 'H', '1317']

SOLUTION: 2299, 6, 1479, 8401, 7, 12, 11, 379, 8951, 8, 1317

PROBLEM: ['5777', '1601', '8877', '9189', '373', '7075', 'g', 'X']

SOLUTION:
5777, 1601, 8877, 9189, 373, 7075, 7, 24