THEM: i would like 1 hat and 2 basketballs  YOU: no can do i will take the hat and basketballs you can have the books  THEM: no way  YOU: i will take the hat and 1 basketball you can have a basketball and 2 books  THEM: how about i take 1 book, 1 hat, and 1 basketball  YOU: no deal i will take the hat you can have the rest  THEM: i need the hat and 2 basketballs  YOU: no can do i will not be able to give up the hat  THEM: either will i  YOU: i guess we can't come to an agreement.