Low Poly C(S+) surface SOLID version

There is set of two complimentary volumes made by division of a single solid cube with C(S+) surface. They are not identical like those made with Diamond, Gyroid or some other surfaces, that give two similar or identical (t=0) volumes mirrored by axonometric(?) plane.
Same set for single unit.

From Math with Love.

This is a part of Fisher-Koch surface crappy mesh catalogue.