O2020N8
y
1
2
f
3
4
p/
5
6
xf
7
8
9
xf
10
f
11
p/
12
13
xf
14
15
16
f
17
18
/
19
20
xf
21
22
23
xf
24
25
/
26
27
xf
28
29
30
xf
31
30()͋xfƂȂ܂B