Task: Program Execution
Input (English): 1, 15, ['R', 'A', 'c', 'k', 'W', 'D', '7113', 'B', '9769', 'q', 'K', '8873', '4433', '2509', '5609', 'd']
Output (English): 9065905233443788Kq9679B3117DWkcAR