Are there any clocks in the scene?
Yes, there is a clock.
    src        edge_attr  dst
0     0   to the left of    3
1     1   to the left of    3
2     2  to the right of   11
3     2  to the right of    4
4     2  to the right of    3
5     3  to the right of    1
6     3  to the right of    7
7     3  to the right of    6
8     3   to the left of   13
9     3  to the right of    0
10    3  to the right of   14
11    3   to the left of    8
12    3  to the right of    5
13    3   to the left of    2
14    4   to the left of    9
15    4   to the left of   10
16    4   to the left of    2
17    4  to the right of    6
18    4  to the right of    5
19    4   to the left of    8
20    4  to the right of    7
21    5   to the left of    3
22    5   to the left of    4
23    5   to the left of   12
24    6   to the left of    3
25    6   to the left of    4
26    7   to the left of    4
27    7   to the left of    3
28    8  to the right of    3
29    8  to the right of    9
30    8  to the right of    4
31    8  to the right of   10
32    9  to the right of    4
33    9   to the left of   13
34    9   to the left of    8
35   10  to the right of   11
36   10   to the left of    8
37   10  to the right of    4
38   10   to the left of   13
39   11   to the left of    2
40   11   to the left of   10
41   12  to the right of    5
42   13  to the right of    3
43   13  to the right of    9
44   13  to the right of   10
45   14   to the left of    3