R
A
2
A
R
A
U
L
L
R
R
L
L
R
A
R
U
L
L
A
R
U
R
A
L
A
L
2
R
U
R
2
R
L
R
2
L
L
A
A
U
2
A
R
R
L
R
R
U
R
R
U
U
R
L
A
U
A
2
L
A
U
A
R
A
2
R
2
R
R
R
2