21.   But it is too early to say what final form such systems might take, he said.

22.   But over time, Nalen says, the system took on a life of its own, with penalties being levied for an assortment of other transgressions.

23.   But that system would take major improvements in agency computers.

24.   But the system took a beating two years ago when four first-round draft picks found a loophole in the rules.

25.   But this whole system takes a different look with the people we have.

26.   But the political system took almost no notice of them.

27.   But there are so many loopholes that the new system may take years to go into effect and may be revised early and often.

28.   But where the new system has taken hold, the tenor of family planning has changed.

29.   But they had to use shards of metal far larger than what the filter system would have taken out, and the experiment left scars on the hydraulic unit.

30.   Congress changed the formula last year so that money will eventually be based on HIV counts, but the new system might not take effect for years.