21.   The first exchange came after Collins crashed his car and ran around the corner away from the police.

22.   The Herrington-Connerly exchange came at a time when the GOP and the campaign leadership are trying to downplay the significance of a Field Poll that showed Prop.

23.   The high-level exchange came one week before congressional elections.

24.   The exchange came as part of the defense effort to persuade U.S. District Judge Stanley Sporkin to suppress the recordings.

25.   The exchange came at the end of a long but not particularly gruelling session of the foreign operations subcommittee of the Senate Appropriations Committee.

26.   The exchange came in the form of statements by the candidates and their aides, and a blizzard of yellowing newspaper clips and official documents.

27.   The exchange came midway in the first debate between the two Democratic candidates, who will face each other in a runoff primary election next Thursday.

28.   The exchange Wednesday came during a week in which campaign finance reform measures are being debated both here and at City Hall in New York.

29.   The fierce exchange of fire came after Serbs seized the post in an audacious assault by troops disguised as blue-helmeted peacekeepers.

30.   The most interesting exchange came on the ice, when Kings defenseman Doug Zmolek and Lightning left wing Jason Wiemer fought twice during the third period.