Task: Program Execution
Input (English): 8, 11, ['689', 'r', 'a', 'k', '4989', 'y', 'H', 'A', 'b', 'U', '121', '1221', 's', '5933', '6451', 'x', 'j', '2821', 'h', 'i', '1549', '2239', '1747', 'a', 'O', 'b', 'k', '4411']
Output (English): 121UbA