11.   Satellites in constellations will also be unusually concentrated at particular altitudes.

12.   Security efforts are concentrated at the registers because so many employee have access to them and because the theft can take many forms.

13.   The fact of the matter is most of those are concentrated at companies with credible records of long-term standing.

14.   The largest number of limited-English students is concentrated at the lower grades, meaning the challenge will be with us for many years.

15.   The potential for abuse of the power that is concentrated at the top of these great chains has grown correspondingly greater.

16.   Boiler production will be concentrated at Potterton and Padiham in the U.K.

17.   A Taliban defense ministry spokesman said on condition of anonymity that fighting was concentrated at the mouth of the valley.

18.   All the cash is concentrated at the maturity of a strips.

19.   Balloting is staggered to allow police forces to be concentrated at polling booths.

20.   Kodak said in a statement that X-ray film production will now be concentrated at its Shantou plant in the southern province of Guangdong.