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#include 
#include

#include 
#include 

using namespace std;

int main( ) {
   string tabStr[6] = {"A", "A" , "B", "A", "D", "E"};

   list coll;
   copy(tabStr, tabStr+6,  back_inserter(coll)); 

   unique_copy(coll.begin(), coll.end(),
	    ostream_iterator(cout," "));
		return 0;
}