B
S
L
S
O
O
L
O
O
B
B
L
O
O
S
L
X
B
X
X
B
L
X
X
X
X
L
B
L
L
S
B
B
X
L
L
B
O
O
L
X
O
S
X
O
B
S
S
S
B
S
S
S
X