Figure 3

a.
Enter Action Code (? for help): p

      1 black      L: -          R: -
      2 blue       L: black      R: -
      3 brown      L: blue       R: -
      4 green      L: brown      R: -
      5 orange     L: green      R: -
      6 red        L: orange     R: -
      7 white      L: red        R: -

b.
          white       (1)
           /
        red           (2)
         /
      orange          (3)
       /
    green             (4)
     /
   brown              (5)
    /
  blue                (6)
   /
black                 (7)