Task: Program Execution
Input (English): 21, 26, ['9693', 't', '7941', '1979', '4707', '2471', '7223', '6191', '9321', 's', '6643', '7807', 't', 'N', '1529', '3417', 'n', '403', '5605', '6947', 'a', 'A', 'I', 'y', '8447', '4349']
Output (English): aAIy84474349