11.   At this point, the remains of the grand scheme are still visible in the extensive network of levees.

12.   Based in Washington, MCI is the second-largest long-distance provider and maintains an extensive Internet network.

13.   Both have extensive networks of political contacts.

14.   Abortion-rights advocates believe that the latest arrests provide strong evidence that there is an extensive underground network of anti-abortion extremists to support those who commit violence.

15.   All those were achieved with what Saralegui says was a new Web site, albeit a Web site with extensive network promotion.

16.   But each discovery kicks into action an extensive military network, including a pioneering DNA lab, geared toward ensuring that no soldier dies unknown.

17.   But Human Life International has by far the most extensive network.

18.   Cholinergic chemicals decouple the extensive networks used for cognition and behavior.

19.   CSX and Norfolk Southern already have extensive networks throughout the Midwest and Southeast.

20.   Fleet and BankBoston can afford to set up extensive networks of automated teller machines.