M
M
D
M
M
B
D
C
M
B
C
C
D
B
Q
M
B
B
M
Q
B
D
Q
C
D
C
Q
M
B
M
M
B
M
D
Q
B
Q
M
C
Q
B
C
B
C
M
D
B
C
Q
D
Q
D
C
Q
B
D
C
M
Q
C
C
B
Q
D
D
D
D
B
Q
D
M
C
Q
C