by steps
000000 000000
000000
d7f728 d7f728
d7f728
00007f 00007f
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0000ff
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007f7f 007f7f
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d3f429
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007fff
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00ff7f
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cff22b
00ffff 00ffff
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cbf02c
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c7ee2e
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c3ec2f
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bfea31
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ff7f7f ff7f7f
ff7f7f
ff7fff ff7fff
ff7fff
bbe832 bbe832
bbe832
ffff00 ffff00
ffff00
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ffff7f
ffffff ffffff
ffffff
b8e634 b8e634
b8e634