一点一
D
B
C
D
A
A
D
1.2
D
B
D
B
D
B
D
C
D
B
C
1.3
B
A
A
B
C
D
D
D
D
1.4
D
C
C
A
D
A
B
2.1
D
C
A
B
D
2.2
C
C
A
B
A
C
D
2.3
C
C
B
A
B
D
C
3.1
C
B
B
D
B
A
C
A
3.2
A
D
D
A
C
C
C
C
3.3
C
D
C
D
C
3.4
B
D
A
B
C
D
D
C
A
A
3.5
D
C
4.1
D
C
D
D
B
C
C
4.2
D
A
D
B
C
A
C
C
一键三连