preposition

There is a doll on the couch.
There is a plant behind the couch.
There is a cat under the table.
There is an apple under the table.
There is a mouse beside the table.
Thereis a robot on the bed.
There is a ball on the chair.
Thereis a lamp between the couch.
Thereis a picture on the wall.
The window is beside the wall.
The bike is between the chair and the table.