Is this a refrigerator or an oven?
This is a refrigerator.
    src        edge_attr  dst
0     0  to the right of    2
1     0  to the right of    5
2     0  to the right of    7
3     0  to the right of    1
4     0  to the right of   14
5     1   to the left of    0
6     1  to the right of   12
7     2   to the left of    0
8     2  to the right of   15
9     2   to the left of    4
10    2   to the left of    9
11    2   to the left of   11
12    2  to the right of   10
13    3  to the right of   15
14    3  to the right of   10
15    4  to the right of    2
16    5  to the right of   12
17    5   to the left of    0
18    6  to the right of   15
19    7   to the left of    0
20    8  to the right of   15
21    9               on    0
22    9  to the right of    2
23   10   to the left of    2
24   10   to the left of   13
25   10   to the left of    3
26   11  to the right of    2
27   12   to the left of    5
28   12  to the right of   15
29   12   to the left of    1
30   13  to the right of   10
31   13  to the right of   15
32   13   to the left of   14
33   14   to the left of    0
34   14  to the right of   13
35   15   to the left of   12
36   15   to the left of    2
37   15   to the left of    8
38   15   to the left of    6
39   15   to the left of    3
40   15   to the left of   13