31.   The two classes of powers are different, both in respect of their origin and their nature.

32.   There are even classes in organizing.

33.   There are of course classes of preferential and pre-preferential creditors, but I do not propose to expand on that here.

34.   There are three classes of sensory neurons which respond to three different classes of objects.

35.   These classes were very unpopular with Contact members.

36.   These friendly classes are so popular, numbers are restricted and booking is a must.

37.   This class is just for beginners.

38.   This class is mainly for freshmen and sophomores.

39.   Evening classes are one way of meeting new people.