Multiple Periodic Boundary conditions

Question

I have a 3D geometry on which I would like to impose Periodic boundary conditions in 2 directions.

I unsuccessfully tried

pbc1 = PeriodicBoundary1()
pbc2 = PeriodicBoundary2()
V = FunctionSpace(mesh, "lagrange", 1, constrained_domain=[pbc1, pbc2])

Also I considered defining both conditions in one class, but did not come up with a working solution.

Can anyone tell me how to impose two periodic boundary conditions?

Many thanks

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