Task: Program Execution
Input (English): 9, 17, ['3407', '2119', 'K', '6905', 'f', '1675', 'q', '6229', 'W', 'x', 'J', '3767', '2553', '2551', 'H', '9121', 'J', 'D', 'V', '4569', 'o', 'f', 'R', '7655']
Output (English): J1219H155235527673JxW