Task: Program Execution
Input (English): 2, 20, ['v', '5967', '7141', 'a', 'S', '5557', 'D', '8657', 'R', '4463', '8475', '3361', '9101', '6715', '945', 'Y', '6207', '7685', 'w', 'Z', '5987', '4215']
Output (English): 59677141aS5557D8657R44638475336191016715945Y62077685wZ