1.   The policy inefficacy proposition derives its strength from the potent combination of the rational expectations hypothesis with the new classical macroeconomics.

2.   Unfortunately it was a potent combination, and there was no known cure.

3.   Along the way, Duncan and Robinson have evolved into the most potent combination this side of tequila and sunrise.

4.   Analysts said a merger of Kaiser and Alumax would create a potent combination of companies whose products and strengths are complementary.

5.   Another potent combination, analysts speculate, would be for US West and PacTel to merge.

6.   As her hostess, I was slowed by the potent combination of a torn knee ligament and a newspaper strike.

7.   Bihari faced his predicament with a potent combination of outrage and humor.

8.   A potent combination resulting in a predictable revival.

9.   A potent combination of drugs has eliminated the active AIDS virus from the blood of nine newly infected patients, according to a study released Thursday.

10.   But Bechtel and Calpine have been stymied by a potent combination of resident and corporate resistance.