S1: A large city is the best school for studying life. S6: Thus a city can teach us many aspects of life. P: If we live in a city for a year or two, we will be able to acquire a good knowledge of life. Q: In a large city we encounter different types of persons. R: The rich and the poor, the proud and the humble, the deceitful and the innocent, the rough and the gentle. S: The various facets of life can be found reflected in a large city. The correct sequence should be: