13,21,159
#
in steps
000000 000000
000000
0000ff 0000ff
0000ff
00007f 00007f
00007f
007f00 007f00
007f00
007f7f 007f7f
007f7f
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007fff
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00ff00
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00ff7f
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060acf
00ffff 00ffff
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7f007f
090fb7 090fb7
090fb7
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7f7f00
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0d159f 0d159f
0d159f
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7fffff 7fffff
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101a87 101a87
101a87
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131f6f 131f6f
131f6f
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ff7fff ff7fff
ff7fff
162457 162457
162457
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff
1a2a3f 1a2a3f
1a2a3f