S₁: The train was running fast and the next station was nearly an hour ahead.

S₆: Their aunt was occupying a corner seat.

P: The children were pestering their aunt with embarrassing questions.

Q: The occupants of the first carriage among others were a tall girl, a little girl and a little boy.

R: Luckily an ice cream vendor came to the rescue of the aunt.

S: She bought four cups of ice cream and all of them became busy with eating.

The proper sequence should be

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