20,3,126
#
in steps
000000 000000
000000
28077d 28077d
28077d
00007f 00007f
00007f
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0000ff
007f00 007f00
007f00
007f7f 007f7f
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23067d
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1e057d
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14037e 14037e
14037e
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0f027e
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ff7fff ff7fff
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05007e 05007e
05007e
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff