You are never to mention this unfortunate occurrence to anyone.

At present no one knows of this unfortunate occurrence but yourselt?

"Has any one of you anything to tell me about the unfortunate occurrence?"

The explosion was quite an unfortunate, but necessary occurrence.

But for an unfortunate occurrence, he might well have had a 27th.

Just then he let rip one of his unfortunate occurrences and giggled.

On October 1, 1971, a most unfortunate occurrence took place.

That unfortunate occurrence is being remembered in every anniversary.

This is an unfortunate occurrence of your man being in the wrong place at the wrong time.

All decent human beings are saddened by this unfortunate occurrence.