What color is that printer?
The printer is gray.
    src        edge_attr  dst
0     1  to the right of    4
1     1   to the left of    5
2     3  to the right of    8
3     4   to the left of    1
4     4   to the left of   11
5     4   to the left of    9
6     4   to the left of    6
7     5  to the right of    7
8     5  to the right of    8
9     5  to the right of    9
10    5  to the right of   11
11    5  to the right of    1
12    5               on    6
13    6  to the right of    4
14    7  to the right of    9
15    7   to the left of    5
16    8   to the left of    3
17    8  to the right of    9
18    8  to the right of   11
19    8   to the left of   10
20    8   to the left of    5
21    9   to the left of   10
22    9               on    6
23    9   to the left of    8
24    9  to the right of    4
25    9   to the left of    7
26    9   to the left of    5
27   10  to the right of    8
28   10  to the right of    9
29   11  to the right of    4
30   11   to the left of    5
31   11               of    9
32   11   to the left of    8