Task: Program Execution
Input (English): 7, 18, ['L', 'b', '6879', '6807', 'x', '1363', '7413', '8753', '457', 'C', '3217', 'p', 'r', '9669', '3805', 'L', '2147', '5813', '2197']
Output (English): 58132147L38059669rp3217C45787537413