11.   But he also acknowledged the difficulties of dealing with the temperamental Parcells.

12.   But by acquiring a drug company, Amgen might be acknowledging the difficulties it has had developing drugs of its own.

13.   But he acknowledged the difficulty of the task.

14.   But Michigan State coach Tom Izzo acknowledges the difficulty in making his strategy succeed.

15.   Carol acknowledges the difficulties.

16.   Clinton argued for encouraging diversity in schools, neighborhoods and workplaces but acknowledged the difficulties of doing so.

17.   Clinton acknowledged the difficulty ahead in dealing with the touchy issues of boundaries and final status of Jerusalem.

18.   Executives of Quaker and Kirshenbaum Bond, offering a preview of the campaign on Monday, acknowledged the difficulties they face.

19.   Finance Ministry officials acknowledge difficulties with the Yakuza.

20.   He acknowledges the difficulty of changing ingrained behavior.