Task: Program Execution
Input (English): 11, 19, ['6667', 'r', 'U', 'B', 'K', 'U', 'j', 'E', 'L', 'e', 'W', '1689', '9229', '9713', 'O', '2251', '1099', 's', 'W']
Output (English): Ws10992251O971392291689W