The way you look and sound like a girl I used to know.

The look said, where is the little girl I used to know?

The one I used to know, he was all right.

Too bad I'm not the same guy she used to know.

I used to know her father and she's very private.

He used to know how to take care of himself.

We used to know the past but not the future.

Some guy I used to know a long time ago.

He was out for the big money, when I used to know him.

I used to know a lot about being a doctor.