11.   And with inventories as low as they are, problems at a big refinery east of the Rockies could send prices rocketing.

12.   Any bad news, from the economy to politics to rebel uprisings in Chiapas, will send prices plunging again.

13.   Any reorientation of the Saudi kingdom toward Iraq and Iran would send oil prices zooming anew, causing fits in the West.

14.   As always, political developments in the Middle East and Russia could send oil prices sharply higher.

15.   Better-than-expected first-quarter profits could send prices rising again, analysts and money managers said.

16.   Below that rate, the assumption held, labor markets would become so tight that wages would surge, sending prices upward.

17.   A government report showing an absence of inflation pressures sent Treasury prices surging Friday.

18.   A frost, which would damage coffee trees and reduce yields of future Brazilian crops, could send prices even higher.

19.   A glut in sports trading cards and scandals about phony autographs and souveniers have sent prices, profits and interest in the collectibles tumbling.

20.   A large jump in output in a bid to grab market share could send prices crashing without producing a commensurate sales gain.