Three at least by the time she told me to go behind the door.
You went behind my back and took her away from me.
A step at a time, I went up behind him.
"You had no right going behind my back to him without ever saying a word to me."
As she and George went out, behind her several people started talking at once.
I'm going down on the east side and work around behind them.
The world went white behind his eyes but he would not go to ground.
What I care about is that you went behind my back.
None of us need ever go behind my father's back.
What I'd like to know is why you had to go behind my back to box me in.