1
1
1
1
2
2
3
5
6
7
8
9
A
C
D
D
E
E
E
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