Figure 1

The union of the inversion lattices for π A = {-2 3 1, π B = 2 -1 -3}, and π L = 1 2 3. The signature graph is highlighted in bold.
The union of the inversion lattices for π A = {-2 3 1, π B = 2 -1 -3}, and π L = 1 2 3. The signature graph is highlighted in bold.