Task: Program Execution
Input (English): 3, 17, ['p', '6997', '6585', '4321', 'Y', 'k', 'x', '2355', 'r', '8405', 'A', '2377', 'c', 'q', '2529', 'M', 'W', 'B', 'W', 'K']
Output (English): WM9252qc7732A5048r5532xkY12345856