1
A
B
A
C
A
D
A
B
A
E
A
F
A
B
A
G
A
H
A
B
A
I
A
C
A
B
A
J
A
K
A
B
A
C
A
L
A
B
A
M
A
N
A
B
A
O
A
D
A
B
A
P
A
C
A
B
A
Q
A
R
A
B
A
C
A
S
A
B
A
T
A
U
A
B
A
D
A
V
A
B
A
W
A
C
A
B
A
X
A
D
A
B
A
C
A
Y
A
B