11.  Enemy forces in Afghanistan have learned from previous U.S. attacks that bunching up is not safe, Pentagon officials say.

12.  George W. Della Jr., who represents the Fells Point area in the Maryland Senate, led the previous attack, along with officials from several neighborhood associations.

13.  In previous attacks, Israel has sent forces into Ramallah, the unofficial capital of the Palestinians.

14.  In previous attacks, the hostile forces have rigged ingeniously simple timing devices that launch the mortars or rockets long after they have fled the scene.

15.  Increasingly, the crowds that gather around the sites of suicide bomb attacks, brandishing posters, include relatives of victims of previous attacks.

16.  Israeli police said it appeared to be the work of a cell of extremists who have killed five Palestinians in six previous attacks.

17.  It is a nice antiphony to the previous attacks, by James Carville and others, to the effect that he was on a partisan tear against the president.

18.  Less than two hours later, a suicide bomber detonated his charge near a bus stop in northern Jerusalem that was the target of at least two previous attacks.

19.  Meister encouraged the commission to start with a thorough study of the behaviors of all previous attacks on aircraft.

20.  Noel said Wednesday that he was never informed of any previous attacks by his dogs on Whipple or anyone else.