[maternal grand-parents], [uncles and aunts]

- x x
- x x
- - x x
    └ x x
    2
  - x x
    └ x x
    2
    
    └ x x
    1

x x

  

x
x

 

x
x

  

|

|

  

│

x
x

  

x
x

│

│

│

x
x

[half siblings]

[on x x's side]

[with] x x
- x x
- x x