A
A
B
S
C
S
A
P
C
C
P
A
C
C
P
S
S
B
A
B
S
P
C
P
B
A
C
P
B
P
B
S
B
B
C
P
S
P
A
C
C
B
A
A
A
B
C
S
P
C
P
B
A
S
C
P
A
A
C
B
P
S
S
P
S
B
S
P
S
B
B
A
S
A
C