Do you see blue clocks or cans?
Yes, there is a blue clock.
    src        edge_attr  dst
0     0   to the left of   19
1     1   to the left of    6
2     1   to the left of    7
3     1   to the left of   20
4     1   to the left of   19
5     1   to the left of    3
6     1   to the left of   21
7     3  to the right of   20
8     3   to the left of   16
9     3  to the right of    1
10    3   to the left of   17
11    4   to the left of   16
12    4  to the right of   20
13    6  to the right of    1
14    7  to the right of   20
15    7  to the right of    1
16    8  to the right of   21
17    8  to the right of   19
18   11   to the left of   16
19   11   to the left of   17
20   11  to the right of   20
21   13   to the left of   20
22   13   to the left of   19
23   16  to the right of    4
24   16  to the right of   19
25   16  to the right of   11
26   16  to the right of   21
27   16  to the right of    3
28   17               of   16
29   17  to the right of    3
30   17  to the right of   11
31   17  to the right of   19
32   17  to the right of   21
33   18   to the left of   19
34   19   to the left of    8
35   19  to the right of    1
36   19  to the right of    0
37   19  to the right of   18
38   19  to the right of   20
39   19   to the left of   16
40   19   to the left of   17
41   19  to the right of   13
42   20   to the left of    7
43   20   to the left of    3
44   20   to the left of    4
45   20  to the right of    1
46   20   to the left of   19
47   20  to the right of   13
48   20   to the left of   11
49   20   to the left of   21
50   21  to the right of   20
51   21   to the left of   17
52   21  to the right of    1
53   21   to the left of   16
54   21   to the left of    8