Anna is Suzy´s.........
aunt
John is Billy´s .................
uncle
Billy is Brian´s..........
cousin
John and Claire are Suzy´s....................
parents
Ann is Billy´s ......................
garndmother
Suzy is Brian´s........................
sister
Peter and Ann are Felix´s.......
grandparents
Anna is Billy´s ................
mother
Peter is Felix´s....................
grandfather