He shook his head as if to clear the fog.

He shook his head again as if to clear it.

Then he shook his head as though to clear it, and nodded.

Then he shook his head as if to clear it.

Stopped and shook her head as though to clear it.

She shook her head as if to clear a fog.

He took a breath, stood straight, shook his head as if to clear it.

Then he shook his head as if to clear the contradiction.

Then he shook his head as though to clear it and set her gently against the wall of rock.

Suddenly he shook his head as though to clear it.