Work-piece group, but It also has different difficulty. For our friends engage everyone up on the aptitude of the offseason, but the friends In cooperation as well help each other do well.
Group, but it is a difficulty with simple pieces are different. For a group of friends, we engage with everyone lined up, each of the Yu people friend in the group, as well as cooperation. Help each other do.
but it was a piece of work groups, easy-to-difficult for different groups we have a friend in the military, all with the handy, but it's a friend of in the group, together with a good help to help them.