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