by steps
000000 000000
000000
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c02d86
00007f 00007f
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0000ff
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c32b85
00ffff 00ffff
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c72885 c72885
c72885
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c92785
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ff7f7f ff7f7f
ff7f7f
ff7fff ff7fff
ff7fff
ca2685 ca2685
ca2685
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ffff00
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ffffff ffffff
ffffff
cc2585 cc2585
cc2585