vibeqc.shell_quartet_orbits¶ vibeqc.shell_quartet_orbits(basis, plan)[source]¶ Partition intrinsic 8-fold-unique primitive shell quartets. Parameters: basis (vibeqc._vibeqc_core.BasisSet) plan (AICCM2026DevBSymmetryPlan) Return type: tuple[tuple[tuple[tuple[int, int], tuple[int, int]], …], …]