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