And with her, tough times would probably be an frequent occurrence.

Public access is not allowed, but is a frequent occurrence.

With his boss in the hospital, that task would be a frequent occurrence.

She knew that, historically, marriage between strangers was a frequent occurrence.

Only 4 percent said it was a frequent occurrence.

But this is a less frequent occurrence these days.

On the English side, reluctance to accept office was a frequent occurrence.

Tell me, is this a matter of frequent occurrence with you?

I would now be interested to know whether this is a more frequent occurrence on any airlines in particular.

Although we can not be sure of this, holding joint titles was a frequent occurrence during those times.