Initial setup. Players 1,2, and 3 are handlers. Players 4,5,6, and 7 are cutters. The set up for this play is identical to the setup for our vertical stack.
The top of the stack cuts under to the force side. Let us assume that the defense is forcing a right handed forearm.
Immediately after this cut, the current top of the stack cuts under to the break side.
Immediately after this cut, the current top of the stack cuts deep.
From this we can easily transition into our vertical stack flow.