Task: Program Execution
Input (English): 3, 19, ['6237', '4749', 'a', '7253', 'X', 'v', '9109', 'G', 'Q', 'h', 'Z', '7325', 'c', '4179', '967', 'b', 'z', '6689', 'D']
Output (English): D9866zb7699714c5237ZhQG9019vX3527a