Enumerazione dei bipoli composti fatti da 3 bipoli.
D: Quanti sono i bipoli composti che si possono costruire collegando 4 bipoli ?

| ApBpCpD 
 
 
  | 
    ApBpC 
 
 
  | 
    ApBp(CsD) 
	 
  | 
    ApB 
 
  | 
    Ap(Bs(CpD) 
	  | 
    Ap(BsC) 
	  | 
    Ap(BsCsD) 
	  | 
    (AsB)p(CsD) 
 (ApB)s(CpD) 
  | 
  
| 1/4 | 1/3 | 2/5 | 1/2 | 3/5 | 2/3 | 3/4 | |
| AsBsCsD 
  | 
    AsBsC 
 
  | 
    AsBs(CpD) 
  | 
    AsB 
 
  | 
    
	As(Bp(CsD) 
	  | 
    As(BpC) 
  | 
    As(BpCpD) 
  | 
  
Il bipolo corrispondente in verticale:
I nomi-lettera dei bipoli sono dati alto-basso sx-dx.
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| ApB 
  | 
    AsB 
  | 
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|   
  | 
    ApBpC 
  | 
    (AsB)pC 
  | 
    As(BpC) 
  | 
    AsBsC 
  | 
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| ApBpCpD 
 
 
 
 
  | 
    (AsB)pBpC 
  | 
    (As(BpC))pD 
  | 
    (AsBsC)pD 
  | 
    (AsB)p(CsD) 
 (ApB)s(CpD) 
  | 
    As(BpCpD) 
  | 
    As((BsC)pD) 
  | 
    AsBs(CpD) 
  | 
    AsBsCsD 
  | 
  
| ApB 
  | 
    AsB 
  | 
    ApBpC 
  | 
    (AsB)pC 
  | 
    As(BpC) 
  | 
    AsBsC 
  | 
    |||
| ApBpCpD 
 
 
 
 
  | 
    (AsB)pCpD 
  | 
    (As(BpC))pD 
  | 
    (AsBsC)pD 
  | 
    (AsB)p(CsD) 
 (ApB)s(CpD) 
  | 
    As(BpCpD) 
  | 
    As((BsC)pD) 
  | 
    AsBs(CpD) 
  | 
    AsBsCsD 
  | 
  
| ApBpCpD 
 
 
  | 
    ApBpC 
 
 
  | 
    (AsB)pCpD 
 
  | 
    ApB 
 
  | 
    (As(BpC))pD 
  | 
    (AsB)pC 
  | 
    (AsBsC)pD 
 
  | 
    (AsB)p(CsD) 
 (ApB)s(CpD) 
  | 
  
| As(BpCpD) 
  | 
    As(BpC) 
 
  | 
    As((BsC)pD) 
  | 
    AsB 
  | 
    
	 AsBs(CpD) 
  | 
    AsBsC 
  | 
    AsBsCsD 
  |