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