One corner of his mouth still curled in a faint smile.

The corner of her mouth curled upward in a faint smile.

Then the corner of his lip curled just a bit.

She looked sideways at him, and one corner of her mouth curled.

I asked when the corner of his mouth curled briefly.

He glanced at me, the corner of his mouth curling a little.

The right corner of his mouth curled in a most unpleasant way.

Its corners were dark and curled, as if it had been carried in a pocket for some time.

Jamie looked at me, the corner of his mouth curling in a smile.

One corner of his mouth had curled up just so.