135°180°
270°150°
315°180°
45°0°
30°
315°225°
180°315°
0°
30°
90°
270°
180° 150° 135°
225°
45°
315°
0°
11
1
2
2
4 3
5
5
67
7
7
8
9
1010
11
12 12
13
13
15
1215
79
12
1
1316
5
21
1819
20
14
14
2020
17
16
2
5
5
8
15
1619
1810
14
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