15,57,128
#
in steps
000000 000000
000000
1e7202 1e7202
1e7202
00007f 00007f
00007f
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0000ff
007f00 007f00
007f00
007f7f 007f7f
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1a6321 1a6321
1a6321
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00ff7f
165541 165541
165541
00ffff 00ffff
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7fffff 7fffff
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ff7fff ff7fff
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030edf 030edf
030edf
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff