1.   Beamish only returned to Britain at irregular intervals.

2.   In order to escape payment Beamish fled the country and he only returned to Britain at irregular intervals from then on.

3.   The shrieks continued at irregular intervals as the creature walked the woods.

4.   They were set at irregular intervals so that it was difficult to achieve any rhythm in the descent.

5.   Cars passed at irregular intervals.

6.   The festival has been held at irregular intervals.

7.   At irregular intervals the lights would suddenly dim, as if a cloud were moving across the sun.

8.   At the moment, however, the Russian military has carried out irregularly timed bombing raids at irregular intervals.

9.   Black stripes anchor an illusory middle ground, breaking up the image, which a viewer reads instinctively from left to right, at irregular intervals.

10.   His terrified wife says Roca is being kept in a cell without light, fed meager rations at irregular intervals, and refused access to his lawyer.