21.   Dell hopes to take advantage of a gradual change in computer buying patterns.

22.   During the two decades Harold Feldman has spent counseling drunk drivers, he has seen a gradual demographic change.

23.   Evolution usually occurs through several small genetic mutations that create gradual changes over long periods.

24.   France, it is said, is hard to reform, preferring upheaval to gradual change.

25.   Gradual change then leads to permanent changes.

26.   He cited an Amish parable to describe the dangers of gradual change.

27.   He hopes that expanding economic and diplomatic ties will encourage gradual change in the North and decrease the chances of a new war on the Korean Peninsula.

28.   If gradual change is the best path, the genial Elfers appears well suited for the job, by both temperament and training.

29.   Meanwhile, the company is undergoing other gradual changes.

30.   Nevertheless, there are indications of gradual change.