What color is the tail?
The tail is white.
    src        edge_attr  dst
0     0  to the right of    4
1     0               of   11
2     0   to the left of    9
3     1  to the right of    8
4     3   to the left of    9
5     3  to the right of    4
6     3               of   11
7     4   to the left of   11
8     4   to the left of    3
9     4   to the left of    0
10    4   to the left of    6
11    5               on    2
12    6  to the right of    4
13    8  to the right of    9
14    8   to the left of    1
15    8  to the right of   11
16    9  to the right of    3
17    9               of   11
18    9   to the left of    8
19    9  to the right of    0
20   11  to the right of    4
21   11   to the left of    8