1.   In the past, the two groups have clashed not only over trade, but also over education, reducing the size of the federal government and overhauling welfare.

2.   Rival ethnic groups clashed in gunbattles in the suburbs of the Burundi capital, Bujumbura.

3.   Sitting in their house in Pol-e-Khomri, surrounded by guards, they said they thought two groups had clashed by mistake.

4.   Outlawed leftist groups clashed with police Wednesday at May Day gatherings, leaving three dead, scores injured and a trail of damaged businesses and cars.

5.   Political violence is common in Bangladesh, especially on the university campuses where student groups clash with guns.

6.   Paramilitar groups rarely clash with the army, which sometimes tacitly supports their anti-rebel operations.

7.   Although Croats fought alongside Muslims in Sarajevo, the two groups clashed elsewhere in the country until a rapproachment last March.

8.   Another group of demonstrators clashed with police who blocked their path on the way to the U.S. Embassy.

9.   An Islamic militant group clashed with police in central Sudan, leaving a policeman and eight militants dead, the government said.

10.   Armed with clubs and at least one automatic rifle and a handgun, the groups clashed in the marketplace in the West Bank town of Ramallah.