R
A
A
S
D
A
A
D
D
D
A
S
C
A
A
R
D
R
A
D
R
R
D
C
A
S
R
R
S
S
D
C
C
R
C
A
R
C
C
C
S
R
R
D
S
S
A
D
R
D
S
D
R
A
R
S
C
D
C
C
R
A
S
D
S
S
A
S
S
D
C
C
A
C
C