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