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