21.   But Then came the Yale strike for a victory.

22.   But worried about Serbian anti-aircraft fire, the alliance appears intent on continuing high-altitude strikes for now.

23.   But worried also about antiaircraft fire, the alliance appears intent on continuing high-altitude strikes for now.

24.   Coal workers at the Vickery mine had been on strike for nearly a year in a dispute about union negotiating rights and hours.

25.   Coal workers at the Vickery mine have been on strike for nearly a year in a dispute about union negotiating rights and hours.

26.   Coal workers at the Vickery mine have been on strike for nearly a year.

27.   Commercial actors have been on strike for several months over issues relating to residuals for cable television and overseas broadcasts.

28.   Financially, the company can afford to stay on strike for as long as two years, Kornitzer said.

29.   Foreign recruiting is the new oil strike for coaches.

30.   French tourism officials blame sensational and misleading TV coverage of the strike for scaring off Americans.