Task: Program Execution
Input (English): 1, 12, ['U', '7223', 'X', 'X', '3375', 'r', '7031', 'l', '6297', 'l', '9683', '9207', 'N', 'H', '5125', '1249', 'w', '4477', 'Z', 'c', '8977', 'P', '1005', 'H', 'O', '4655', '8169', '3369', 'x']
Output (English): U, N, O