C
S
S
N
U
T
U
N
U
U
N
S
U
U
T
C
C
N
C
U
N
C
S
U
U
U
C
S
T
N
U
C
T
N
T
S
N
S
N
T
U
T
T
T
C
T
C
N
N
C
S
S
C
N
C
S