Sentence examples similar to should there be a mistake from inspiring English sources

Had there been a mistake?

"If there is a mistake, a shortcoming, it won't and shouldn't be covered up".

"There was a mistake.

But there is a mistake in it.

There was a mistake, she said.

"There was a mistake," he said.

I think there was a mistake.

So there's a mistake, however, that the Russians make.

COL.AMEN: There was a mistake in the record.

However, we think there is a mistake in their proof.

What if there is a mistake?