What's the roll in?
The roll is in the dispenser.
    src        edge_attr  dst
0     0               of    5
1     0               in    7
2     0  to the right of    3
3     1  to the right of   14
4     1               on   11
5     2  to the right of    3
6     2               on   11
7     3   to the left of    2
8     3   to the left of    5
9     3   to the left of    0
10    3               on   11
11    4  to the right of    6
12    4   to the left of   10
13    4  to the right of   14
14    4  to the right of   13
15    5  to the right of    3
16    6   to the left of    4
17    6   to the left of   12
18    6               on   13
19    6               of   13
20    7               on   11
21    8               on   12
22    9               on   12
23    9  to the right of   14
24   10  to the right of    4
25   10  to the right of   11
26   10  to the right of   12
27   11  to the right of   14
28   11   to the left of   10
29   12   to the left of   10
30   12  to the right of    6
31   12  to the right of   14
32   12  to the right of   13
33   13   to the left of    4
34   13   to the left of   12
35   14   to the left of   12
36   14   to the left of    9
37   14   to the left of   11
38   14   to the left of    4
39   14   to the left of    1