1
1
1
1
1
1
1
1
1
1
1
1
2
2
3
3
3
5
5
6
7
9
9
A
C
D
E
E
E
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F
F