S
S
V
U
S
S
D
D
D
C
D
V
C
V
S
V
V
S
U
C
U
V
C
V
U
C
U
D
D
S
D
V
S
V
S
C
U
U
C
U
U
D
C
C
U
C
D
D
V
D
S
C
U
U
S
D
V
V
V
D
V
C
S
S
C
S
U
U
V
S
U
C
D
C