Task: Program Execution
Input (English): 2, 17, ['B', 'D', 'z', 'C', 'x', 'k', 'k', 'J', '4491', '9449', '6897', 'F', 'x', 'i', 'O', '8859', '57', 'B', '3559']
Output (English): DzCxkkJ449194496897FxiO885957