B
U
L
C
B
C
L
B
C
C
B
C
U
U
U
U
L
B
U
U
U
L
L
L
B
U
B
C
C
U
B
B
C
B
U
L
C
C
C
B
U
B
C
B
B
L
L
B
C
U
U
C
L
B
U
U
L
C
C
L
L
L
L
U
B
L
B
L
U
L
C
C