What are the magnets on?
The magnets are on the fridge.
    src        edge_attr  dst
0     0   to the left of    2
1     0  to the right of    4
2     0   to the left of   13
3     1  to the right of   13
4     1               in    6
5     1   to the left of    9
6     2  to the right of    0
7     2   to the left of   13
8     2  to the right of    4
9     4   to the left of    5
10    4   to the left of    8
11    4   to the left of    7
12    4   to the left of   11
13    4   to the left of    2
14    4   to the left of   13
15    4   to the left of    0
16    5  to the right of    4
17    5   to the left of    7
18    5   to the left of   13
19    6  to the right of    7
20    6  to the right of   11
21    6  to the right of   13
22    7  to the right of    4
23    7  to the right of    5
24    7   to the left of   10
25    7  to the right of    8
26    7   to the left of    6
27    7               on   13
28    8  to the right of   12
29    8   to the left of   13
30    8   to the left of   11
31    8   to the left of    7
32    8  to the right of    4
33    9  to the right of    1
34    9  to the right of   13
35   10               in    6
36   10  to the right of    7
37   10  to the right of   13
38   11  to the right of    8
39   11  to the right of   12
40   11  to the right of    4
41   11   to the left of    6
42   12   to the left of    8
43   12   to the left of   11
44   12   to the left of   13
45   13   to the left of    9
46   13   to the left of   10
47   13  to the right of   12
48   13  to the right of    5
49   13  to the right of    8
50   13  to the right of    2
51   13   to the left of    1
52   13  to the right of    0
53   13  to the right of    4
54   13   to the left of    6