1
1
1
1
1
1
1
5
5
5
8
8
8
A
B
B
D
D
D
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