by steps
000000 000000
000000
728183 728183
728183
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00007f
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0000ff
007f00 007f00
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007f7f
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678387
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00ff7f
5c868b 5c868b
5c868b
00ffff 00ffff
00ffff
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7f007f
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518890
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478b94
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7fffff
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3c8d98
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31909d 31909d
31909d
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ff7f7f
ff7fff ff7fff
ff7fff
2692a1 2692a1
2692a1
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff
1c95a6 1c95a6
1c95a6