For each a ∈ A, let R a be any fixed rotation such that R a a ⋆ = a, i.e., a rotation that aligns a ⋆ with a. For a given integer parameter r, we define the Rodrigues rotation matrix R(i, r, a) that has a as eigenvector and that rotates i•360 r degrees around the axis defined by a. For each a ∈ A, let C a = {R a R(i, r, a)M ⋆ 0 : i ∈ {0, 1, . . . , r -1}} be the set of r candidate basis, being rotated copies of M ⋆ 0 , associated with the vector a. Doing this for all vectors of A leads to a set