Could you make an example on single-site DMFT calculation for a lattice model with multi-site/orbitals in a unit cell?

[liuhangphy]

There are examples on single-site DMFT calculation for realistic materials with multi-site/orbitals in a unit cell. But I did not find examples on that for lattice models. So, could you make an example on the single-site DMFT calculation for a lattice model with multi-site/orbitals in a unit cell, especially on basis rotation needed for studying the case with nonzero off-diagonal Green functions? Thank you.