by steps
000000 000000
000000
d728fc d728fc
d728fc
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0000ff
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c11edc
00ffff 00ffff
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950a9e
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ff7f7f
ff7fff ff7fff
ff7fff
8a058e 8a058e
8a058e
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff