B
A
B
G
A
G
F
G
F
B
c
B
G
A
G
E
F
E
B
c
B
G
A
G
F
G
F
B
c
B
d
e
d
F
G
F
B
A
B
G
A
G
F
G
F
B
c
B
G
A
G
E
F
E
B
c
B
G
A
G
F
G
F
B
c
B
d
e
d
F
G
F
B
c
B
B
c
B
G
A
G
B
c
B
B
c
B
d
e
d
B
c
B
B
c
B
G
A
G
B
c
B
g
a
g
A
B
A
B
c
B
B
c
B
G
A
G
B
c
B
B
c
B
d
e
d
B
c
B
B
c
B
G
A
G
B
c
B
g
a
g
A
B
A
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