Task: Program Execution
Input (English): 15, 21, ['b', 'D', 'C', 'J', '467', '3011', 'y', 'o', 'C', '8235', '1149', '2101', 'w', '35', 'y', 'L', 'P', 's', '2791', '289', 'z', '6357']
Output (English): z9821972sPLy