Is the arrow white?
No, the arrow is red.
    src        edge_attr  dst
0     0   to the left of    4
1     0   to the left of   12
2     0   to the left of   15
3     0   to the left of   13
4     0   to the left of    2
5     0   to the left of    1
6     0   to the left of    8
7     0   to the left of    7
8     1  to the right of   15
9     1  to the right of   13
10    1  to the right of    4
11    1  to the right of    0
12    2   to the left of    3
13    2  to the right of    0
14    2  to the right of   17
15    2   to the left of   16
16    2  to the right of   11
17    2   to the left of   18
18    3  to the right of    2
19    3               on   10
20    4  to the right of    0
21    4   to the left of   13
22    4   to the left of   15
23    4   to the left of    1
24    4  to the right of    6
25    5   to the left of   17
26    5   to the left of   10
27    6   to the left of    4
28    6   to the left of    7
29    7  to the right of    0
30    7  to the right of    6
31    8  to the right of   14
32    8  to the right of    9
33    8  to the right of    0
34    9  to the right of   14
35    9   to the left of    8
36   10  to the right of    5
37   11   to the left of    2
38   11   to the left of   17
39   12  to the right of   17
40   12  to the right of    0
41   13  to the right of    0
42   13   to the left of    1
43   13  to the right of   14
44   13  to the right of    4
45   14   to the left of   13
46   14   to the left of    9
47   14   to the left of    8
48   15               in   10
49   15   to the left of    1
50   15  to the right of    0
51   15  to the right of    4
52   16  to the right of    2
53   17   to the left of    2
54   17  to the right of    5
55   17  to the right of   11
56   17   to the left of   12
57   18  to the right of    2