Task: Program Execution
Input (English): 4, 7, ['1517', 'O', '5281', '5655', 'W', '3493', 'F', '3319', '7021', '4615', 'D', '3101', 'o', 'J', 'E', 'i', '5719']
Output (English): F, 3493, W, 5655