Is the tower on the right side?
No, the tower is on the left of the image.
    src        edge_attr  dst
0     0  to the right of    1
1     0  to the right of    9
2     0   to the left of    7
3     1   to the left of    0
4     1   to the left of    2
5     1   to the left of   12
6     1  to the right of    9
7     1   to the left of    7
8     2  to the right of   12
9     2  to the right of    9
10    2  to the right of    1
11    2  to the right of    4
12    4   to the left of    7
13    4   on the side of   15
14    4  to the right of    9
15    4   to the left of    2
16    5   to the left of    8
17    6   to the left of   11
18    6   on the side of   15
19    7  to the right of    0
20    7  to the right of    8
21    7  to the right of    1
22    7  to the right of   12
23    7  to the right of    4
24    8  to the right of    5
25    8  to the right of    9
26    8   to the left of    7
27    9   to the left of    2
28    9   to the left of    0
29    9   to the left of   12
30    9   to the left of    4
31    9   to the left of    8
32    9   to the left of    1
33   10   to the left of   19
34   10   to the left of   11
35   11  to the right of   10
36   11  to the right of   19
37   11  to the right of    6
38   12   on the side of   15
39   12   to the left of    2
40   12  to the right of    9
41   12  to the right of    1
42   12   to the left of    7
43   13  to the right of   17
44   17   to the left of   13
45   19  to the right of   10
46   19   to the left of   11