Sphere Set
From The Crop Circle Ship Wiki
A sphere set describes the objects S1, S2, and S3 as they appear together in the crop circle formations. The depiction of a sphere set in the crop circles can be used to represent all 3 sphere sets, where each sphere set exists along an arm of the large tetrahedron structure.
An example sphere set is shown in the image below, where the numbers 1, 2, and 3 represent the spheres - S1, S2, and S3.
