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: ['2803', '8285', 'U', 'O', '9329', '695', '3877', '1873', '2365', 'P', '153', 'D', '8495', '7593', '4067', 'Y', 'u', '4885', 'f', 'B', 'o', '8499']

SOLUTION: 2803, 8285, 21, 15, 9329, 695, 3877, 1873, 2365, 16, 153, 4, 8495, 7593, 4067, 25, 21, 4885, 6, 2, 15, 8499

PROBLEM: ['n', 'h', '3545', 'u', '9117', 'L', '4145', 'K', 'E', 's', 'Y', '1835', 'X', 'x', 'w', 'T', 'Y', 'P', '3531', 'x', '6953', '9475', 'b', 'x', '2915', '547', '513', '2749', '737', 'l', '3367']

SOLUTION: 14, 8, 3545, 21, 9117, 12, 4145, 11, 5, 19, 25, 1835, 24, 24, 23, 20, 25, 16, 3531, 24, 6953, 9475, 2, 24, 2915, 547, 513, 2749, 737, 12, 3367

PROBLEM: ['K', '7685', '2439', 'f', '3807', 'p', '5167', '7219', 'X', 'Q', 'M', '1931', '7737', '633', 'r', '5013', '8975', 't', 'g', '2455', 'B', 'F', 'Q', 'U', '5821', 'Z', 'Z', '7585', 'e', 'S', 'P', '3209', 'K', 'A', '187', 'E', '3923']

SOLUTION:
11, 7685, 2439, 6, 3807, 16, 5167, 7219, 24, 17, 13, 1931, 7737, 633, 18, 5013, 8975, 20, 7, 2455, 2, 6, 17, 21, 5821, 26, 26, 7585, 5, 19, 16, 3209, 11, 1, 187, 5, 3923