21.   But he did not mention the United States and offered no plan to study the problem.

22.   But he studies these problems mostly in the laboratory, though he has also carried his experiments to the putting green.

23.   But now it joins a growing list of companies that have studied the problem and made large financial preparations.

24.   But the commission and others who have studied the problem agree that the toll is far too high.

25.   But, after studying the problems with the doors slamming shut and sealing off evacuation routes, they have been unable to agree on a solution.

26.   Council appoints committee to study problem, which appoints subcommittee to analyze problem, which appoints task force to research problem, which orders doughnuts.

27.   Engineers studying the problem concluded that it was not caused by any design shortcomings, which might have required major modifications and much longer delays.

28.   Engineers studying the problem say they cannot tell if the recent difficulties are just bad luck or signs of systemic problems in the launching business.

29.   Even more alarming, these numbers appear to be growing, say experts who have studied the problem in Illinois, New York and Texas.

30.   Finneran has studied the problems in depth and immersed himself and his staff in negotiations with judges, prosecutors and prison experts.