M.C. Escher - Entwined Circular Rings

On this page (page "A") Escher has put together the possibilities of making entwined circular ring patterns based on a square grid.
We can use these basic patterns to decorate a cube with entwined circular rings.

Plan of a cube.

On each of the faces of the cube a part of the second pattern of Escher's page A is drawn in such a way that when folding the faces together the white arcs will become closed paths.