What is the pattern of the umbrella to the left of the other umbrella?
The umbrella is checkered.
    src        edge_attr  dst
0     1  to the right of    9
1     1  to the right of   15
2     4   to the left of   11
3     4  to the right of   12
4     4  to the right of   17
5     4  to the right of    6
6     4  to the right of   10
7     5  to the right of   15
8     5  to the right of    9
9     6   to the left of    4
10    8   to the left of   10
11    8   to the left of   12
12    8   to the left of   17
13    9   to the left of    1
14    9   to the left of    5
15    9               on   15
16   10  to the right of    8
17   10   to the left of   16
18   10   to the left of    4
19   11  to the right of   16
20   11  to the right of   17
21   11  to the right of    4
22   11  to the right of   12
23   12   to the left of   16
24   12   to the left of   14
25   12   to the left of   11
26   12   to the left of    4
27   12  to the right of    8
28   14  to the right of   12
29   15   to the left of    5
30   15   to the left of    1
31   16  to the right of   17
32   16  to the right of   10
33   16  to the right of   12
34   16   to the left of   11
35   17   to the left of   16
36   17   to the left of    4
37   17  to the right of    8
38   17   to the left of   11
39   17     walking down    7
40   17             with    0
41   17          holding    6