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x
y
z
a
b
100
a
a
100
b
b
100
c
c
100
d
d
100
e
e
200
f
f
200
g
g
200
h
h
200
i
I
200
j
j
300
k
k
300
l
l
300
m
m
300
n
n
300
o
o
400
p
p
400
q
q
400
r
r
400
s
s
400
t
t
500
u
u
500
v
v
500
w
w
500
x
x
500
y
y