I was the one who sat with my back to a door.

But a man sat alone with his back to Miles's wall.

Through an open door at the end of the hall, I saw a man sitting inside with his back toward me, reading a book.

She saw then why he did not sit with his back to the wall.

I don't like sitting with my back to a door.

He was across the park, sitting with his back to me.

I sat there with my back against the wall, looking up at her.

It went and sat with its back to the door.

I was sitting with my back to him when he came up behind me.

He was sitting with his back to the glass window.