Is this a tall flag?
Yes, this is a tall flag.
    src        edge_attr  dst
0     0  to the right of   14
1     0   to the left of    7
2     1   to the left of    9
3     2   to the left of   15
4     3  to the right of   14
5     3  to the right of   16
6     3   to the left of   17
7     4  to the right of    8
8     4               in    9
9     5   to the left of   15
10    7  to the right of    0
11    8   to the left of   12
12    8  to the right of   14
13    8   to the left of    4
14    8   to the left of   11
15    8        flying in    1
16    9  to the right of    1
17    9  to the right of   14
18   11        flying in   17
19   11   to the left of   12
20   11  to the right of    8
21   12  to the right of    8
22   12            above   13
23   12  to the right of   11
24   12        flying in    1
25   14   to the left of    0
26   14   to the left of    9
27   14   to the left of    8
28   14   to the left of    3
29   14   to the left of   16
30   14   to the left of   15
31   15  to the right of   14
32   15   to the left of   17
33   15  to the right of    2
34   15  to the right of    5
35   15               in    1
36   15  to the right of   16
37   16               of    2
38   16   to the left of    3
39   16   to the left of   15
40   16  to the right of   14
41   17  to the right of    3
42   17  to the right of   15