0,20,254
#
in steps
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000000
0020fe 0020fe
0020fe
00007f 00007f
00007f
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0000ff
007f00 007f00
007f00
007f7f 007f7f
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001afe
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0017fe 0017fe
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7f7f7f
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0011fe 0011fe
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ff7f7f ff7f7f
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ff7fff ff7fff
ff7fff
000bfe 000bfe
000bfe
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff
0008fe 0008fe
0008fe