1
2
3
4
4
4
5
5
5
5
6
8
8
9
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9
9
A
A
A
A
A
A
A
A
A
A
B
B
C
C
D
D
E
E
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
F
F
F
F
F
F