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