Task: Program Execution
Input (English): 15, 20, ['7183', 'Y', '3535', '9939', '4973', 'E', '939', 'h', 'M', 's', '8557', 'C', '4687', 'M', '6739', 'B', 's', '7471', 'F', 'Q', 'I', '2961', '4699', '2497', '9923', 'M', '2165', 'x', '6349', '1821']
Output (English): QF1747sB9376