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