The top of the zone can be overloaded, here by attackers 1-2-3-4.
X1 bumps X3 on a pass to 2.
Optionally start in a tandem, X1 can take first pass to 2 or 3.
Strong ballside coverage when the ball is on the wing, but only one weakside rebounder.
X2 takes the ball on a pass back to 1, or gets back to the initial 2-3 set.
On ball reversal to 3, X2 bumps X4 back to the baseline.
Options on a pass to the corner
a) Deny a pass back out to the wing.
b) Trap the corner
X1 follows the pass, X2 and X4 rotate (or stay).
X2 covers the wing, X4 covers the high post or point.
c) Allow a pass back to the wing (less aggressive).
X1 bumps X2.