11.   But an unexpected problem accompanied the substantial windfall of new books.

12.   But increasing the number of American forces to turn the Northern Alliance into a more credible fighting force has run into unexpected problems, Rumsfeld said.

13.   But his new job has presented unexpected problems.

14.   But Republicans have also run into unexpected problems.

15.   But time and again unexpected problems arose.

16.   Children have proved an unexpected problem to some of those in hiding.

17.   Chronic funding problems as well as an unexpected medical problem that grounded a cosmonaut crew just before its launching last year forced the Russians to juggle station assignments.

18.   Culbertson said the problems encountered during Phase One have been a benefit because they gave lessons in how to detail with unexpected problems.

19.   Do you have sufficient financial reserves to deal with unexpected problems?

20.   Emergency spending, intended to address unexpected problems, is a device that allows Congress to spend money beyond its budget.