He rolls over on his back and looks straight up.

One of them just rolled over on his back and went straight in from five hundred feet.

Then he rolled over on his back and looked up.

He tried to roll over on his back - but which way was up?

I'll roll over on my back in bed and it won't be pressing there.

I rolled over on my back and stared up at the sky.

He fell to the deck and rolled over on his back.

Later the man rolled over on his back and slept.

He'd rolled over on his back and raised a hand to God, one last prayer, certain he was about to die.

He pulled the man's shoulder, rolling him over on his back.