How to traverse the Brillouin zone of a triangular lattice in CST MWS for dispersion

Hi,

I want to get the PBG of a triangular lattice using CST eigenmode solver. I put the boundary condition as follows

+/- x: Periodic
+/- Y: Periodic
+/- z: Et=0

I know that the phase x and phase y parameters are to be swiped over some angle (As we do for rectangular lattice
1 from Γ to X point of Brillion zone (0,0) to (180,0)
2 from X to M point (180,0) to (180, 180)
3 from M to Γ point) (180,180) to (0,0)

But what are the angles for triangular lattice?

One more thing, How to configure the boundary conditions to get TE and TM dispersion plot?

Is it like the following?

+/- z: Et=0-> TM dispersion?
+/- z Ht=0-> TE dispersion?

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