Before revision:  We also prove the existence of a topological conjugacy \eta:\Omega_6 \Omega_5 which shears Wang tilings by the action of the matrix and an embedding \pi:\Omega_5 \Omega_4 that is unfortunately not onto.
After revision:  We also prove the existence of a topological conjugacy \eta:\Omega_6  and an embedding \pi:\Omega_5 \Omega_4 that is unfortunately not onto.