Do the walls have orange color?
No, the walls are gray.
    src        edge_attr  dst
0     0   to the left of    3
1     0  to the right of    2
2     1      in front of    9
3     2   to the left of    0
4     3   to the left of    6
5     3  to the right of    0
6     3  to the right of   10
7     3               on    9
8     4               on    9
9     4   to the left of   10
10    4   to the left of    7
11    5   to the left of    6
12    6  to the right of    3
13    6  to the right of    5
14    6  to the right of    9
15    6  to the right of    8
16    6  to the right of    7
17    7   to the left of    6
18    7  to the right of    4
19    7  to the right of   10
20    8   to the left of    6
21    9   to the left of    6
22    9           behind    1
23   10  to the right of    4
24   10   to the left of    3
25   10   to the left of    7