by steps
000000 000000
000000
84e728 84e728
84e728
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00007f
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0000ff
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93ea23
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007fff
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00ff7f
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a2ed1e
00ffff 00ffff
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7f007f
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b2f019
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c1f314
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d0f60f
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e0f90a e0f90a
e0f90a
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ff7f7f ff7f7f
ff7f7f
ff7fff ff7fff
ff7fff
effc05 effc05
effc05
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff