X1 starts with no puck
X2 passes to X1 and then X2 skates across with timing
X1 passes to X3, X3 returns a pass to X2
X3 skates across ice
X2 passes to X4, X4 returns a pass to X3

Continuous Drill

Options
1) All forehand
2)All backhand
3) Backhand to forehand
4) Pick up in feet