Step 1:  Analyze the strucutre

  Aspect 1 Aspect 2 Aspect 3 Aspect 4
Theory_A X X    
Theory_B   X X  
Theory_C     X X
Theory_Syn X X X X

Each theory as a tree

  1. For Theory-Tree_A, its branches =(Aspect1, Aspect 2)
  2. For Theory-Tree_B, its branches = (Aspect2, Aspect 3)
  3. For Theory-Tree_C, its branches =(Aspect3, Aspect 4)
  4. For Theory-Tree_Syn, its branches= (Aspect1, Aspect2, Aspect3, Aspect4)

Each aspect as a tree

  1. For Aspect-Tree_1, its branches =(Theory_A, Theory_B, Theory_Syn )
  2. For Aspect-Tree_2, its branches =(Theory_B, Theory_C, Theory_Syn )
  3. For Aspect-Tree_3, its branches =(Theory_C, Theory_D, Theory_Syn )
  4. For Aspect-Tree_4, its branches =(Theory_D, Theory_Syn )