Do you think the glass is white?
Yes, the glass is white.
    src        edge_attr  dst
0     1   to the left of    7
1     1   to the left of    6
2     2  to the right of   10
3     2   to the left of    9
4     2  to the right of   11
5     2   to the left of    8
6     2  to the right of    5
7     4               of    5
8     4   to the left of    6
9     5   to the left of    6
10    5   to the left of    2
11    6  to the right of    1
12    6  to the right of    5
13    6  to the right of    4
14    7               in    6
15    7  to the right of    1
16    8  to the right of    2
17    8  to the right of   11
18    9  to the right of   11
19    9               in    8
20    9  to the right of    2
21   10               on   11
22   10   to the left of    2
23   11   to the left of    2
24   11   to the left of    8
25   11   to the left of    9