Is that projector both black and large?
No, the projector is black but small.
    src        edge_attr  dst
0     0  to the right of    4
1     0   to the left of    1
2     1  to the right of    0
3     1  to the right of    7
4     1               on    9
5     1  to the right of    4
6     2  to the right of    7
7     2  to the right of    4
8     3  to the right of    7
9     3  to the right of    8
10    4   to the left of    2
11    4   to the left of    0
12    4   to the left of    1
13    6  to the right of    7
14    6  to the right of    8
15    7   to the left of    3
16    7   to the left of    6
17    7   to the left of    1
18    7   to the left of    2
19    8   to the left of    6
20    8   to the left of    3