11.   Mr Loveitt was sitting behind an elegant mahogany desk.

12.   Sitting behind the big desk gave her a feeling of importance.

13.   The manager was sitting behind a large desk.

14.   The passengers charter has been warmly welcomed by many of my Back-Bench colleagues many of whom are sitting behind me.

15.   The pilot sat behind the gunner, offering a very small forward profile.

16.   The scientists sit behind banks of computers, giving instructions to the crew of the spaceship.

17.   Then he turned the program over to the five panelists who sat behind him on the stage.

18.   Very few people ever left the isolation hospital and visitors had to sit behind a glass screen.