They're what you used to call a female vocal group.

They were also recognized as the world's best-selling female group of all time.

In this case, the female group is believed to be experiencing a conflict.

That segment was broken down into male and female groups.

The female group is much larger and covers greater areas.

Male and female groups do not mix outside of the breeding season.

However, among these female groups, there are no friendly relations.

As usually happened, the people immediately split into male and female groups.

This makes them the best-selling female group of all time.

Additionally, the girls have set a new record for their first week sales, and has become the top selling foreign female group of 2011.