11.   Components on a finer scale than that are said to be virtually impossible without incurring prohibitive costs.

12.   For others, it seems, speech is impossible without much movement of the hands.

13.   He also wanted the deal to be formulated in a way that would make the reimposition of sanctions impossible without a new Security Council resolution.

14.   He made clear that real reforms were impossible without strong financial support from the city.

15.   His bruising, all-out style would be impossible without guts and desire.

16.   House Republican leaders initially tried to exclude environmental provisions from the bill, but Senate passage was impossible without them.

17.   If the walls are drywall, then scraping may be impossible without damaging the surface.

18.   In fact, in an existing cathedral ceiling, it is impossible without removing the ceiling finish.

19.   It would be impossible without counting the large surpluses the Social Security system is running nowadays.

20.   It would have been totally impossible without the United Nations.