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