11.   He slept at regular intervals, was not colicky, and was not overly active.

12.   If using a cone, spray again at regular intervals.

13.   Now for the Decorations ... Push the gold candles into the icing at regular intervals.

14.   Sleep could be divided into a number of different phases which recurred at regular intervals throughout the night.

15.   Small trees can be planted at regular intervals along a path to create an avenue.

16.   Such incidents happen with greater or lesser degrees of seriousness at regular intervals in all our lives.

17.   The fog-horn, its sound now muffled by the houses, continued to bleat at regular intervals.

18.   The phone rang at regular intervals all afternoon.