Task: Program Execution
Input (English): 15, 21, ['4735', 'x', 'G', '1431', '7953', 'x', 'P', 'k', 'h', '6451', '3579', 'V', 'q', 'G', 'R', 'U', 'D', '5037', 'M', '1095', '5777', 'q', '1531', 'L', '8205', '5553', '6071', 'v', '8019']
Output (English): RUD5037M10955777