She sat next to where he lay on his back.

He just moved to the other side of the bed, and lay on his back.

That was important when he lay on his back to fire.

He lay on his back and looked up at the sky.

I lay on my back and looked at the sky.

I lay on my back and felt movement from every direction.

He stood and laid his hand on the old man's back.

The dead man lay on his back in the African sun.

I came up behind him, and laid a hand on his back.

He walked off the track and lay on his back.