63,0,21
#
in steps
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000000
7f000e 7f000e
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00007f 00007f
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0000ff
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007f7f 007f7f
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5f0011 5f0011
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0f001b 0f001b
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ffff00 ffff00
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ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff
00001d 00001d
00001d