What color are the hills?
The hills are blue.
    src        edge_attr  dst
0     0  to the right of   12
1     1  to the right of    5
2     1   to the left of    9
3     1  to the right of   12
4     1   to the left of    4
5     2   to the left of    7
6     2  to the right of    4
7     2  to the right of    8
8     2  to the right of    9
9     2   to the left of   14
10    3  to the right of    8
11    3  to the right of    4
12    3   to the left of   14
13    3  to the right of    9
14    3   to the left of    7
15    3               of    2
16    4  to the right of    8
17    4   to the left of    2
18    4  to the right of    1
19    4   to the left of    7
20    4  to the right of   13
21    4   to the left of    3
22    5   to the left of   13
23    5   to the left of    8
24    5   to the left of    1
25    7  to the right of    4
26    7  to the right of    2
27    7  to the right of    3
28    8   to the left of    4
29    8  to the right of    5
30    8   to the left of    2
31    8  to the right of   13
32    8   to the left of    3
33    8  to the right of   12
34    9  to the right of    1
35    9   to the left of    2
36    9  to the right of   13
37    9   to the left of    3
38   10  to the right of   12
39   12   to the left of   13
40   12   to the left of    0
41   12   to the left of    1
42   12   to the left of    8
43   12   to the left of   10
44   13   to the left of    4
45   13  to the right of    5
46   13   to the left of    8
47   13  to the right of   12
48   13   to the left of    9
49   14  to the right of    3
50   14  to the right of    2