4.5①
0
1
4.5②
0
1
4.5①
0
1
4.5①
0
1
4.5①
0
1
4.5②
0
1
4.5①
0
1
4.5②
0
1
4.5②
0
1
4.5①
0
1
4.5
0
3
4.5
0
4
4.5
0
2