by steps
000000 000000
000000
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9892df
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00007f
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0000ff
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858fe3
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007fff
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728de7 728de7
728de7
00ffff 00ffff
00ffff
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7f007f
5f8aeb 5f8aeb
5f8aeb
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3986f3 3986f3
3986f3
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2683f7 2683f7
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ff7f7f
ff7fff ff7fff
ff7fff
1381fb 1381fb
1381fb
ffff00 ffff00
ffff00
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ffff7f
ffffff ffffff
ffffff