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In another moment, something came tumbling down upon me that I thought was the wall.

The boy stood there, his whole world tumbling down around him.

And then about two weeks after we started doing that, it just came tumbling down.

Above all, expect to see the wall between church and state come tumbling down.

Then he was out, tumbling down to the surface below.

I feel as if a mental wall has come tumbling down.

It takes about half a minute before they begin to fall, tumbling down on each other.

And how did the house of cards come tumbling down?

The boy was the key that could make the entire house of cards come tumbling down.

When the rocks came tumbling down, there would be no place to run.