by steps
000000 000000
000000
1be829 1be829
1be829
00007f 00007f
00007f
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0000ff
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007f00
007f7f 007f7f
007f7f
1be728 1be728
1be728
007fff 007fff
007fff
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00ff7f
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00ffff
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1ce628 1ce628
1ce628
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7fffff
1ce527 1ce527
1ce527
ff0000 ff0000
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1de527 1de527
1de527
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ff7f7f
ff7fff ff7fff
ff7fff
1de427 1de427
1de427
ffff00 ffff00
ffff00
ffff7f ffff7f
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ffffff ffffff
ffffff
1ee427 1ee427
1ee427