0
less than or equal to theta less than or equal to
12 pi
7
three arm
8
0
less than or equal to theta less than or equal to
31.5 3 4 7 2
9
0
less than or equal to theta less than or equal to
29.4 4 0 3 2
10
four arm
11
0
less than or equal to theta less than or equal to
12 pi
12
0
less than or equal to theta less than or equal to
12 pi
13
0
less than or equal to theta less than or equal to
12 pi
14
15
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