Task: Program Execution
Input (English): 14, 18, ['691', '4975', 'c', 'B', 'F', '6939', 'W', 'r', 'G', '4637', 'H', '1987', 'm', 'w', '3079', 'Z', '7881', '7077']
Output (English): 70777881Z3079w