16,21,141
#
in steps
000000 000000
000000
0e128b 0e128b
0e128b
00007f 00007f
00007f
0000ff 0000ff
0000ff
007f00 007f00
007f00
007f7f 007f7f
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00ff00
00ff7f 00ff7f
00ff7f
0f138c 0f138c
0f138c
00ffff 00ffff
00ffff
7f0000 7f0000
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7f007f 7f007f
7f007f
0f148c 0f148c
0f148c
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10158d
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11158d 11158d
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ff7fff ff7fff
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12178e 12178e
12178e
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff
13188f 13188f
13188f