Do the figure and the pen have a different colors?
Yes, the figure is blue and the pen is white.
    src        edge_attr  dst
0     2  to the right of    5
1     3               on    6
2     4   to the left of    6
3     5   to the left of    8
4     5  to the right of    7
5     5   to the left of    2
6     5               on    0
7     6               on    0
8     6  to the right of    4
9     7   to the left of    5
10    7   to the left of    8
11    8  to the right of    7
12    8  to the right of    5