Task: Program Execution
Input (English): 12, 20, ['3119', '5721', '8005', '9689', 'X', 'E', 'r', '5095', '4009', 's', '5235', '5369', 'H', '7885', 'A', 'v', 'K', '7041', 'X', 'K', '6637']
Output (English): KX1407KvA5887H9635