Create a twisted box cage with straight edges out of eight corner points.

Input parameters:

1. A → First corner of cage.
2. B → Second corner of cage.
3. C → Third corner of cage.
4. D → Fourth corner of cage.
5. E → Fifth corner of cage.
6. F → Sixth corner of cage.
7. G → Seventh corner of cage.
8. H → Eighth corner of cage.

Output parameters:

1. Cg → Twisted box cage with straight edges.