1.   Even in this period, disputes simmered between the city and state.

2.   One of the more unusual disputes simmering in Congress during these budget-cutting times is over funding for housing in Russia.

3.   Still, disputes are simmering just below the surface.

4.   That dispute is still simmering.

5.   The dispute has been simmering between the two countries for years.

6.   The dispute has been simmering for months.

7.   The shipping dispute has been simmering for years, and the only surprise Thursday was that the negotiations appeared to have broken down.

8.   But the dispute still simmered.

9.   Guano mining has stopped, but a low-level dispute has simmered ever since.

10.   He also called on the relevant authorities to act on sensitive matters immediately and not allow disputes to simmer.