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