By the time he realized his error, it was too late.
Most important she realized her error and was not happy about it.
He said it was three hours before the crew realized its error.
The guest realized his error and put the bowl down.
I have since realized my error and now firmly support the state of Israel.
Only then did she realize her error in welcoming it.
They walked all the way into the master bedroom before realizing their error.
Beginning to realize my error, and somewhat embarrassed, I looked around the bar again.
The moment she had done so, she realized her error.
It was almost as if a chair had spoken, and then I realized fully my error.