Figure 2

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

   There are 7 nodes

Enter Action Code (? for help): f

   Tree depth is 7

Enter Action Code (? for help): p

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

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