Task: Program Execution
Input (English): 8, 21, ['1663', 'D', 'v', '1615', 'B', '4297', 'v', '3113', '3365', 'N', 'X', '7903', 'E', 'Y', '3405', '1005', '4433', 'y', 'I', 'C', 'X']
Output (English): XCIy443310053405YE7903XN33653113