CB passes the ball to LB.
The ball is then forwarded to LW, who is running in and puts a screening on the defending R2.
Before the screening is made, the ball is passed to LB, who is running in on the outside of the defending R1.
CB has simultaneously moved in attacking the space between defending R1 and R2.
LB can now choose to shoot from the outside position of the defending R1 or pass the ball to CB.