15,0,237
#
in steps
000000 000000
000000
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1300e9
00007f 00007f
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0000ff
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007f00
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1200ea
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7f007f 7f007f
7f007f
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1000ec
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7f7f00
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7f7f7f
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0f00ed
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ff7fff
0c00f0 0c00f0
0c00f0
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff
0c00f1 0c00f1
0c00f1