Directions: In the following items, each passage consists of six sentences. The first sentence (S1) and the final sentence (S6) are given. The middle four sentences (P, Q, R, S) have been jumbled. Find the proper sequence.

S1: There is no sound more familiar in Calcutta than the clanking of its tram cars.

S6: Their progress is regarded with the mixture of dread and embarrassment reserved for the approach of a cantankerous old aunt.

P: For a growing body of opinion in the city, trams are a symbol of urban blight.

Q: It is also an irritant.

R: All day and late into the night the trundling roll of a tram has become a symbol, a portent.

S: Slow, overcrowded and unwieldy, they are thought of as obstructionist and outmoded.