[paternal grand-parents], matuse

- x x
- x x
- - x x
    └ x x
    1

[maternal grand-parents], matuse

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

x x

x
x

 

x
x

  

x
x

 

x
x

|

|

  

|

|

│

  

│

x
x

  

x
x

│

│

│

x
x