28,45,63
#
in steps
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000000
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00007f
0000ff 0000ff
0000ff
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007f00
007f7f 007f7f
007f7f
070b0f 070b0f
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15212f 15212f
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1c2d3f
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314e6f 314e6f
314e6f
ffff00 ffff00
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ffff7f ffff7f
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ffffff ffffff
ffffff
395a7f 395a7f
395a7f