Are there printers or laptops?
Yes, there is a laptop.
    src        edge_attr  dst
0     0   to the left of    5
1     0   to the left of    3
2     0   to the left of   10
3     0   to the left of    9
4     1   to the left of    3
5     1  to the right of    2
6     1  to the right of    7
7     2   to the left of    7
8     2  to the right of   11
9     2          holding    4
10    2   to the left of    1
11    2   to the left of    6
12    3  to the right of    0
13    3  to the right of    8
14    3  to the right of    1
15    5   to the left of   10
16    5  to the right of    0
17    6  to the right of    2
18    6  to the right of    7
19    7   to the left of    1
20    7  to the right of    2
21    7   to the left of    6
22    7  to the right of   11
23    8   to the left of    9
24    8   to the left of    3
25    9  to the right of    8
26    9  to the right of    0
27   10  to the right of    5
28   10  to the right of    0
29   11   to the left of    7
30   11   to the left of    2