From initiation, 6 and 7 split. Back ideally to the open side, 6 to the break.
Once the split has happened, 5 goes deep.
if it's open, huck goes. If either under is open it can go too.
If 6 and 7 do not get it, they fold back in to the middle of the stack, 4 pushes back and 3 is front. 5 clears back as quickly as possible, wide if needed.