x x

父母

[full siblings]

[half-siblings]

[on x x 's side]

祖先

[the great-grandparents]

 x x   x x   x x   x x        
|
8		   |
9		   |
10		   |
11		    
 
   
|   |    

[the grandparents]

 x x   x x    
|
4		   |
5		  
 
|  

[the parents]

 x x   x x
|
2		   |
3
|
  x x