Task: Program Execution
Input (English): 3, ['W', 'L', '8419', 'M', 'A', '6673', '6047', '7005', '815', '513', 'O', 'U', '5949', '5807', 's', '4255', 'O', '6355']
Output (English): W, M, 6047, 513, 5949, 4255