1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
2
4
5
6
8
8
8
8
9
9
9
9
9
A
A
B
B
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
F
F
F
F