How clean is the toilet paper to the right of the box?
The toilet paper is dirty.
    src        edge_attr  dst
0     0   to the left of    9
1     0  to the right of    3
2     1  to the right of    8
3     1  to the right of    4
4     2  to the right of    3
5     3   to the left of   10
6     3   to the left of   11
7     3   to the left of   13
8     3   to the left of    6
9     3   to the left of    2
10    3   to the left of    0
11    3   to the left of   12
12    3   to the left of    7
13    4   to the left of    1
14    4   to the left of    8
15    6  to the right of    3
16    6   to the left of    9
17    7  to the right of    3
18    8   to the left of    1
19    8  to the right of    4
20    9  to the right of    6
21    9  to the right of    0
22   10  to the right of    3
23   11  to the right of    3
24   12  to the right of    3
25   13  to the right of    3