On which side is the pillow?
The pillow is on the right of the image.
    src        edge_attr  dst
0     0   to the left of   11
1     0   to the left of    3
2     0   to the left of    4
3     0   to the left of    9
4     0  to the right of    8
5     1   to the left of    3
6     1   to the left of    4
7     1               on    0
8     1   to the left of    7
9     2   to the left of   12
10    2   to the left of    6
11    3  to the right of    7
12    3  to the right of    0
13    3  to the right of    1
14    4  to the right of    1
15    4               on    3
16    4  to the right of    7
17    4  to the right of    0
18    5   to the left of   12
19    6  to the right of    2
20    7  to the right of    1
21    7   to the left of    3
22    7   to the left of    4
23    8   to the left of    9
24    8   to the left of    0
25    8   to the left of   12
26    9   to the left of   11
27    9  to the right of    8
28    9  to the right of    0
29   10  to the right of   11
30   11  to the right of    0
31   11  to the right of    9
32   11   to the left of   10
33   12  to the right of    5
34   12  to the right of    8
35   12  to the right of    2