11.   After a quick exam, my concern grew.

12.   But concern has been growing among tribal members that culture and sovereignty are being pushed aside.

13.   But concern has grown within the company that other managers may be on verge of calling it quits.

14.   But concern is growing over the heavy debt that many students have taken on.

15.   But concern is growing.

16.   But concern is growing within the region, too.

17.   But the concern is growing.

18.   Canadian stocks fell as concern grew that slowing Asian economies will hobble profit growth of Canadian exporters that rely on sales to the region.

19.   Canadian stocks fell for a second day as concern grew that slowing Asian economies will hobble profit growth of Canadian exporters that rely on sales to the region.

20.   Concern also grew that slowing economic growth in Asia will put a drag on earnings at companies around the globe.