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: ['4505', 'J', '5569', 'X', '4045', '4377', 'B', 'P', 's', '5743', '7513', 'b', '2771', '8129', 'q', 'n', 'I', '3991', '8015', '4399', 'L', 'B', 's', '1093', 'k', '2583', '7705', 'x', 'V', '6037', '2511', '8311', '6371', 'p', '287', 'K']

SOLUTION: 4505, 10, 5569, 24, 4045, 4377, 2, 16, 19, 5743, 7513, 2, 2771, 8129, 17, 14, 9, 3991, 8015, 4399, 12, 2, 19, 1093, 11, 2583, 7705, 24, 22, 6037, 2511, 8311, 6371, 16, 287, 11

PROBLEM: ['s', '7331', '8643', 'z', 'J', '6141', '6597', 'F', '95']

SOLUTION: 19, 7331, 8643, 26, 10, 6141, 6597, 6, 95

PROBLEM: ['U', '2203']

SOLUTION:
21, 2203