by steps
000000 000000
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a4ab5c
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007fff 007fff
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aab067 aab067
aab067
00ffff 00ffff
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b3b978 b3b978
b3b978
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b6bc7d
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ff7f7f ff7f7f
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ff7fff ff7fff
ff7fff
b9bf83 b9bf83
b9bf83
ffff00 ffff00
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ffffff ffffff
ffffff
bdc289 bdc289
bdc289