21.   The universities where demonstrations occurred were not expected to be reopened, said the principal, who spoke Thursday on condition of anonymity.

22.   This week, violent demonstrations occurred in several provincial towns.

23.   In Viscaya province numerous other demonstrations occurred but no incidents were reported.

24.   Similar demonstrations occurred Friday in several European cities including Madrid, Brussels and Geneva.

25.   The first demonstration occurred Tuesday, when protesters deliberately drove slowly down one of the major highways leading to Ottawa.

26.   The most vocal demonstrations occurred in the Pacific, the site of the nuclear tests.