N
C
A
n
C
S
N
N
N
A
A
A
n
n
C
S
n
S
n
n
S
S
C
A
N
N
C
A
A
C
S
n
S
S
C
S
A
A
C
n
N
A
N
S
A
S
n
n
N
S
A
C
S
C
n
C
n
N
C
S
N
N
A
A
n
n
C
N
N