Standard force flick vert stack.
Dump defender gets beat upline.
Strike is called. Mark goes straight up to cover upline, Opening up the around space. Ace defender (3) covers around space as opens.
Everyone looks to seal one edge. 3 (around). 2 (upline).
2 Seals open side and stays tight. 3 seals around space and stays tight. 4 seals inside break space/ace space if their person becomes new ace.
Once 2 is set on the open side, mark can return to no around force.