Task: Program Execution
Input (English): 4, 9, ['959', '5131', '2527', 'E', '2171', 'V', 'w', 'F', '4509', '907', 'Y', 'x', '5853', 'O', '6247', 't', '1657', '2215']
Output (English): 4509FwV2171E