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: Tom Walker and his wife were always at loggerheads.

S6: Tom silently thanked God for this relief.

P: She never tired of reproaching him on this score.

Q: Tom was incurably lazy and talkative.

R: One day Mrs. Walker caught a deadly cold, and shortly afterwards, died.

S: This was a constant source of irritation to his wife.