These same sort of pressure differences occur all over the planet for various reasons.

The best thing would be if some sort of miracle occurred!

Event data records are created whenever some sort of transaction occurs.

The pastor, too, once noticed that some sort of change bad occurred.

All sorts of things occur to help one that would never have occurred.

Some sort of bifurcation had occurred, in about 1960, or maybe even earlier.

There was no question that some sort of crash had occurred here.

Why not some standing groups, on a rotating basis, who would be ready to go into the area when these sort of things occur?

What will happen when that sort of thing occurs?

A similar sort of betting occurs elsewhere, although the subject is as likely not to be sport.