P
A
L
R
L
R
B
R
B
P
B
L
L
P
B
A
A
P
B
P
P
A
A
B
R
L
R
P
B
B
P
A
A
A
P
P
L
L
B
L
B
A
L
A
R
L
P
R
R
R