transitive_group_id: [18,324]

 Description: ((C9 : C3) x (C9 : C3)) : C2 

 Stabilizer: C3 x (C9 : C3) 

Density: 1

Join: True 

Spectrum: [(1, 648), (4, 72), (7, 144), (40, 24), (1129, 1), (-20, 72), (49, 8), (-14, 48), (-140, 8), (-329, 1), (-2, 432)]