He turned over and looked at her, up on his elbow.

But for some reason she was up on one elbow.

With what was clearly an effort, the boy got up on one elbow.

I sat up on one elbow, trying to see through the window behind my bed.

She raised up on her elbow and looked at me.

I rose on my elbow and looked back at him.

Suddenly, I put my hand on his elbow and stopped.

The woman raised herself up on her elbow and looked at him.

Will raised himself on one elbow and looked at her.

She raised on one elbow to get a better look at him.