Wave port for coplanar coupled lines

Hi all

I want to simulate the shown coplanar coupled lines.

I want to calculate Zeven and Zodd.

Can someone tell me how to define the wave port?

what are its size , position , any necessary boundary conditions ... ?

should the wave port include the ground metals?

also , shall I use Zpi , Zpv or Zvi?

The forum here contains questions for coupled microstrip , or single coplanar line.

but it doesn't contain questions for coupled coplanar lines.

Thanks in advance.