D
R
R
A
R
R
D
R
U
D
U
A
A
D
D
U
A
U
U
A
F
F
R
F
U
F
F
F
F
A
U
U
D
D
D
A
F
U
R
A
D
F
F
R
U
U
A
A
D
F
F
A
D
D
A
F
F
D
R
R
U
A
R
U
U
A
D
U
R
R
R
R
F
A
D