Tolstoy ['that', 'with', 'said', 'from', 'were', 'what', 'they', 'this', 'which', 'have', 'pierre', 'prince', 'there', 'them', 'when', 'been', 'their', 'would', 'only', 'natasha'] R.L.Stevenson ['that', 'with', 'this', 'said', 'have', 'were', 'there', 'from', 'they', 'like', 'when', 'what', 'captain', 'been', 'more', 'silver', 'could', 'would', 'then', 'doctor']