31.   But there have recently been cracks in the administration of the San Francisco Unified School District.

32.   But the medical examiners have not determined whether the crack was a cause of death or occurred after Levy was already dead, the cable news network reported.

33.   But there are cracks in official walls here.

34.   But there were cracks in the facade of solidarity.

35.   But there were other cracks in the carefully cultivated image of national unity.

36.   Civil rights groups complained that the disparities resulted in African-Americans receiving much longer sentences because crack was much more popular in poor minority neighborhoods.

37.   Crack is strictly business.

38.   Crack is the only drug that carries a mandatory prison term for possession.

39.   Crack suddenly was no longer cool.

40.   Crack was a new, cheap drug that was outside the control of the older, established dealers, he said.