21.   The search is being concentrated in an area where the plane likely would have crashed after running out of fuel.

22.   Until now, troops had concentrated their search for the five tourists to the Pahalgam area.

23.   US and coalition forces have been concentrating their search for remaining al-Qaeda and Taliban in the mountainous east of the country.

24.   Police were concentrating their search on a wooded district of the Taunus mountains near Frankfurt.