b
a
b
a
e
c
j
i
f
h
C
G
i
a
c
a
a
b
e
a
B
A
j
g
d
f
C
B
c
a
D
G
i
l
a
b
b
c
h
j
E
H
d
f
g
h
a
b
d
g
k
h
c
a
B
D
b
a
h
b
B
C
A
B
k
b
e
i
B
A
f
k
a
b
b
a
i
e
e
f
L
F
i
j
A
B
C
A
h
i
h
f
b
c
L
B
k
d
F
A
d
b
b
d
k
l
F
E