Task: Program Execution
Input (English): 9, 18, ['7129', '6629', '1811', 'X', '8309', '4697', 'J', 'o', '333', 'L', '3385', 'l', '7851', '6963', 'a', '7683', '3307', '4165']
Output (English): 416533077683a69637851l3385L333