21.   Alexander leans back in her chair and her head disappears behind a table lamp, as if she is hiding.

22.   Bulgaria effectively disappeared behind the Iron Curtain and has stayed out of the spotlight as an oasis of calm during the recent Balkan conflicts.

23.   But during construction an exuberant Corinthian capital on the first floor could be seen disappearing behind a grid of particularly bland suspended panels.

24.   But when summer winds blows from the southwest, the scenery disappears behind a haze of air pollution carried from Midwestern coal-burning plants and distant cities.

25.   Down the block, Shakah watched the last of the funeral procession disappear behind a curve.

26.   Except for viewers in the front rows, the actors tend to disappear behind a thicket of audience heads.

27.   He and DeVoll had seen the flitting bright image of something as tall as a man disappearing behind a tangle of bushes and trees.

28.   His eyes disappear behind gold-rimmed glasses when he laughs.

29.   Hikers return from the top of Enchanted Rock at sunset, but many others linger at the summit to watch the sun disappear behind the hills.

30.   In an instant, she disappeared behind a wall of flame.