31.   Violent behavior is all too common in our society.

32.   Ear infections are common in pre-school children.

33.   Auto-tuning VHF receivers are now common in cars.

34.   This regressive behaviour is more common in boys.

35.   Hoarseness is very common in the winter season.

36.   A sexist attitude that was pretty common in the precincts of the automobile business.

37.   The term is common in informal contexts.

38.   Many words are more common in speech than in writing.

39.   The practice was more common in ancient times than it is now.

40.   And divorce with its accompanying money problems is common in the United States.