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