by steps
000000 000000
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7fffff
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00007f
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85e1e8
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007fff
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00ff7f
8bc4d1 8bc4d1
8bc4d1
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00ffff
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91a7ba 91a7ba
91a7ba
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978aa3 978aa3
978aa3
7f7fff 7f7fff
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7fff7f
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9d6d8c
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a35075 a35075
a35075
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ff7fff ff7fff
ff7fff
a9335e a9335e
a9335e
ffff00 ffff00
ffff00
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ffffff ffffff
ffffff
af1648 af1648
af1648