Highest segment in use: 9
Number of segments available: 9

Segment:   Linked to:

   1          2
+------+   +------+
   2          5
+------+   +------+
   5          4
+------+   +------+
   4          8
+------+   +------+
   8          7(bad)
+------+   +------+
   7(bad)     ?
+------+   +------+
   3          0
+------+   +------+
   6          9
+------+   +------+
   9          3
+------+   +------+