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• 5 poles
• 1 Trans. zeros (Extended Box)
• 2 Trans. zeros (Generalized Extended Box)
  
• 2 Trans. zeros (Cascaded Triplets)
  

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• 6 poles
• 2 Trans. zeros (Extended Box)
• 3 Trans. zeros (Genreralized Extended Box - Type 1)
  
• 3 Trans. zeros (Genreralized Extended Box - Type 2)
  

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• 7 poles
• 2 Trans. zeros (Extended Box)
• 3 Trans. zeros (Generalized Extended Box)
  
• 3 Trans. zeros (Casacaded Triplets)
  

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• 8 poles
• 3 Trans. zeros (Extended Box)
Other topologies for more T.z.s
• 4 Trans. zeros (Genreralized Extended Box)
  
• 4 Trans. zeros (Cascaded quadruplets)
  
• 5 Trans. zeros (Perfect 3d box)
  

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• 9 poles
• 3 Trans. zeros (Extended Box)
Other topologies for more T.z.s
• 4 Trans. zeros (Generalized Extended Box)
  
• 4 Trans. zeros (Perfect square !)
  
• 5 Trans. zeros
  
• 5 Trans. zeros (Square with a sinlge cross-coupling)
  
• 5 Trans. zeros (cascaded quadruplets/triplets)
  

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• 10 poles
• 4 Trans. zeros (Extended Box)
• 5 Trans. zeros (Generalized Extended Box - Type 1)
• 5 Trans. zeros (Generalized Extended Box - Type 1bis)
• 5 Trans. zeros (Generalized Extended Box - Type 2)
  

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• 11 poles
• 4 Trans. zeros (Extended Box)
• 5 Trans. zeros (Generalized Extended Box)
  

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• 12 poles
• 5 Trans. zeros (Extended Box)
  

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• 14 poles
• 6 Trans. zeros (Extended Box)

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See topolgies adapted to Symmetric characteristics.