"You made a natural mistake," he said, "on the occasion of our first meeting."

I realized at once the natural mistake she had made.

When he got closer, she saw that she had made a natural enough mistake.

No one had ever called him "cowboy" before, but it was a natural mistake.

She thought you were playing a Bach fugue, but it was a natural mistake.

Yet I ask you to acknowledge that it was a most natural mistake.

I don't want him suffering, imprisoned, cut off from his life because of a perfectly natural and unfortunate mistake.

It was a natural mistake in a room filled with almost-famous people.

His last thought was that it had been a perfectly natural mistake.

Robin knew it had been a natural mistake for the Titanides.