The ball is passed by RW to RB, who is running in.
Just before RB puts a screening on the defending R2, the ball is passed to LB, who is running in.
LB passes the ball to CB, who is running in against the defending L2.
CB "shoots" at goal.
The "goalkeeper" passes the ball to RW and the exercise starts over again.
RB change place with the defending R2, who runs up and becomes the new LB.