R
C
C
R
L
R
S
R
L
B
L
B
C
B
L
S
S
L
S
C
C
B
B
C
S
S
L
R
B
L
R
C
L
S
L
L
B
C
C
R
R
S
B
R
L
B
B
R
C
S
L
S