11.   With the old socialist health care system moving rapidly to a for-profit basis, treatment costs can be prohibitive.

12.   ANC has won praise for adopting free market economy, defying fears it would install socialist system.

13.   But all play key roles in supporting and protecting the socialist system.

14.   Castro called for the marches to support the amendment, announced one month after activists submitted a proposed referendum for deep reforms in the socialist system.

15.   Castro asked marchers to support the amendment, announced one month after activists submitted a proposed referendum for deep reforms in the socialist system.

16.   Castro called for the marches to support the amendment, announced a month after a group of activists submitted a proposed referendum for deep reforms in the socialist system.

17.   Cuban officials say voters turned out in vast numbers and cast overwhelmingly favorable ballots in parliamentary elections they had portrayed as a referendum on the socialist system.

18.   He said that while those two countries had managed to retain their socialist systems while achieving growth, each needed to go about economic reforms in its own way.

19.   Some Cuban exiles in the United States have expressed hope that the pope can somehow convince Castro to modify his socialist system.

20.   To that end, an article of the constitution was changed to make it illegal for lawmakers to attempt in the future to change the Cuban socialist system.