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