What is the cup full of?
The cup is full of liquid.
    src        edge_attr  dst
0     0   to the left of    8
1     1  to the right of    7
2     2  to the right of    3
3     2  to the right of    7
4     3  to the right of    6
5     3   to the left of    5
6     3   to the left of    2
7     4  to the right of    8
8     5  to the right of    3
9     5  to the right of    7
10    6   to the left of    7
11    6   to the left of    3
12    7  to the right of    6
13    7   to the left of    5
14    7   to the left of    2
15    7   to the left of    1
16    8  to the right of    9
17    8   to the left of    4
18    8  to the right of    0
19    9          full of    0
20    9      filled with    0
21    9   to the left of    8