B
A
C
C
B
C
C
A
Q
M
Q
C
M
A
M
M
A
B
B
A
Q
A
Q
Q
M
M
B
B
M
A
C
C
B
A
A
Q
C
B
Q
Q
A
M
Q
C
C
Q
B
M
M
B