Merrill Lynch discovered its mistake about a week too late.

If that was so, what would they do when they discovered their mistake?

It was not long before I discovered my first mistake.

It was better not to dwell on the subject, or he would quickly discover his mistake.

And after a number of attempts to buy something, she discovered her mistake.

They all took it for white wine and discovered their mistake.

Then he discovered his mistake and tried to placate her.

Hopefully, when he discovered his mistake it would be too late.

When she discovered her mistake, the package had already been shipped.

With luck, each would kill large numbers of the other before they discovered their mistake.