A and B are going to play over with each other. Before they get the ball, they look to see if there is a fellow player in the box who is free.
The attackers in the box offer themselves to the two players who are playing over.
If you have offered yourself and you do not get the ball, you run away again, make room for the other players and come back to offer yourself again later.
When the ball has come to one of the attackers, a 4:3 is played, if there is no space forward then they play the ball back to A or B and it starts all over again.
If the defenders take the ball then they score in one of the 2 goals outside the 23 meter area.