18,66,32
#
in steps
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000000
123e1e 123e1e
123e1e
00007f 00007f
00007f
0000ff 0000ff
0000ff
007f00 007f00
007f00
007f7f 007f7f
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123f1e 123f1e
123f1e
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00ff7f 00ff7f
00ff7f
12401f 12401f
12401f
00ffff 00ffff
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7f007f 7f007f
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12411f 12411f
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124320 124320
124320
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124421 124421
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ff7fff ff7fff
ff7fff
124521 124521
124521
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff
124622 124622
124622