12,27,39
#
in steps
000000 000000
000000
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0f1b2d
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0000ff 0000ff
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0e1b2b
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0d1b2a
00ffff 00ffff
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0c1b28
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0c1b27
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0a1b24
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ff7f7f ff7f7f
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ff7fff ff7fff
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091b22 091b22
091b22
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ffffff ffffff
ffffff
091c21 091c21
091c21