21.   As a general pattern, Republicans have been backing limited reforms, while Democrats are pushing for more, but neither group is trying to fundamentally change the system.

22.   As donations migrate to other causes, AIDS groups are trying to reinvent fund-raising approaches and to devise fresh ones that might compel potential contributors.

23.   As the growing legions of financial advisers jostle for customers, a small trade group is trying to step above the fray.

24.   At first, the group tried outside venture deals while also mining ideas from Bell Labs.

25.   Baker said his group is not trying to goad the prince into making a similar donation, but nevertheless said he hoped bin Salman would respond with his checkbook.

26.   Baraja said Thursday that the group had been trying to protect Americans.

27.   Baty runs Women in Aviation from her private airfield in West Alexandria, and said the group tries to expose girls to careers in science and technology.

28.   Authorities suspect that terrorist groups have tried to gain access to nuclear devices that could be smuggled in a suitcase.

29.   Avant-garde groups have tried to adapt pop instrumentation and manners.

30.   Borshch asked the craning, squinting group as it tried to take in the looming twin towers.