Because children's story idea ever episode that mother's side the family behind one of. The father's side after another family. Section I, are both due to my 2nd floor bedroom connecting one with the other one houses House.
As a child I used to think. I'm right behind one of the family. On the other side of his family after one. For me, it is either because my bedroom on the second floor of the house, with the connection between one's home.
Because when I was young I have ever thought that Wants to keep the family in the mother a house. The father in the family after one. And I'll be both due to my bedroom floor is connected between one house with another house.