A
N
N
H
N
N
N
B
A
N
A
N
B
B
N
H
N
H
D
N
D
N
N
N
N
A
D
N
N
B
N
N
A
H
A
B
N
N
A
N
B
B
H
H
H
N
A
N
D
B
A
H
N
H
N
H
H
H
A
H
N
N