21,6,135
#
in steps
000000 000000
000000
06077f 06077f
06077f
00007f 00007f
00007f
0000ff 0000ff
0000ff
007f00 007f00
007f00
007f7f 007f7f
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090681
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007fff
00ff00 00ff00
00ff00
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0d0683 0d0683
0d0683
00ffff 00ffff
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7f0000 7f0000
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7f007f 7f007f
7f007f
110685 110685
110685
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7f7f7f 7f7f7f
7f7f7f
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150687
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7fff7f 7fff7f
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7fffff 7fffff
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190689 190689
190689
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1d068b 1d068b
1d068b
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ff7fff ff7fff
ff7fff
21068d 21068d
21068d
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff
25068f 25068f
25068f