     boeket
      |
      |    --------------       ---------------       ----------------
      |   | car   | cdr  |     | car    | cdr  |     | car     | cdr  |
       -->| roos  |   o------->| viool  |   o------->| boter-  |  nil |
          |       |      |     |        |      |     | bloem   |      |
           --------------       ---------------       ----------------
