The ball starts with LW, who passes to the attacking LB.
LW runs behind LB and receives the ball on the way and dives in across the center.
During that the ball is passed to the attacking RB.
At the same time LW receives the ball from RB, RW moves behind the back RB and receives the ball from RB and dives in across the center.
During that the ball is passed to the attacking LB, who passes to the next LW, who has run behind LB......