15,27,253
#
in steps
000000 000000
000000
1f37fc 1f37fc
1f37fc
00007f 00007f
00007f
0000ff 0000ff
0000ff
007f00 007f00
007f00
007f7f 007f7f
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1b30fc 1b30fc
1b30fc
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00ff7f
1729fc 1729fc
1729fc
00ffff 00ffff
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7f007f 7f007f
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7f7f7f 7f7f7f
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0f1bfd
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7fffff 7fffff
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0b14fd 0b14fd
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070dfe 070dfe
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ff7fff ff7fff
ff7fff
0306fe 0306fe
0306fe
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff