S₁: When Madhu opened the living-room, an extraordinary sight met her eyes. S₆: But it was now too late, the man had disappeared. P: She soon returned home in a police car with two policemen. Q: A strange man was fast asleep in an armchair. R: Madhu left the house immediately and went to the police station. S: Hurrying upstairs, she went to her dressing table but to her relief found that the man had taken only an imitation diamond necklace. The proper sequence should be