by steps
000000 000000
000000
c72888 c72888
c72888
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00007f
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0000ff
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c62686
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007fff
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00ff7f
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c52584
00ffff 00ffff
00ffff
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c42382
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c2207e
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c11f7c
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ff7fff
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c01d7a
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff
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c01c78