21.   In fact, the Justice Court Clerk testified that this type of error occurred only once every three or four years.

22.   In three or four years, Maple hopes send a baby panda back to Beijing.

23.   In three or four years, the starting quarterbacks from USC, UCLA, Oregon and Stanford might come from this group.

24.   Inexperience at Nebraska typically involves an offensive lineman who becomes a starter after three or four years of seasoning, hundreds of practices and thousands of repetitions.

25.   It is the ritualistic dance that happens here every four years.

26.   Many of the students in the CUNY system attend part time, and take longer than the usual two or four years to get their degrees.

27.   Most British series run about six episodes a season and peter out of production after three or four years.

28.   Now, most of the snails are growing off-site and scientists hope to have several thousand survive for three or four years.

29.   On the average, Americans move once every four years.

30.   Over the next four years, with Sister Jacques-Marie frequently allowed to photograph him at work, Matisse also grew close to two Dominican monks.