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n
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d
a
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0
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0
h
0
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0
r
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v
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d
a
n
d
s
h
i
f
t
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0
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
h
0
0
0
0
0
0
1
1
0
0
0
0
0
0
0
0
0
0
y
0
0
0
0
0
0
1
2
2
2
2
2
1
0
0
0
0
0