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