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: ['P', '3561', '1457', 'V', '8483', '4861', '9267', '9767', '8693', '6153', '9681', 'h', 'D', '7019', '3563', 'x', '1831', 'I', '3741', 'q', 'Q', '9885', '9603']

SOLUTION: 16, 3561, 1457, 22, 8483, 4861, 9267, 9767, 8693, 6153, 9681, 8, 4, 7019, 3563, 24, 1831, 9, 3741, 17, 17, 9885, 9603

PROBLEM: ['N', '8821', 'U', 'X', 'N', '4125', 's', 'C', '9141']

SOLUTION: 14, 8821, 21, 24, 14, 4125, 19, 3, 9141

PROBLEM: ['s', 'k', 'D', 'b', 'y', '5243', 'f', '9499', '6043', 'G', '6951', 'K', '4425', '7321', 'N', '6469', '999', '3333', 'D']

SOLUTION:
19, 11, 4, 2, 25, 5243, 6, 9499, 6043, 7, 6951, 11, 4425, 7321, 14, 6469, 999, 3333, 4