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