1
4
4
4
5
8
8
9
A
B
B
B
B
B
C
C
D
D
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