by steps
000000 000000
000000
8e707f 8e707f
8e707f
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00007f
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0000ff
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007f7f 007f7f
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007fff
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807d7f 807d7f
807d7f
00ffff 00ffff
00ffff
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728b7f
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6b927f 6b927f
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64997f 64997f
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ff7f7f ff7f7f
ff7f7f
ff7fff ff7fff
ff7fff
5da07f 5da07f
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ffff00 ffff00
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ffff7f
ffffff ffffff
ffffff
57a77f 57a77f
57a77f