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