0,9,21
#
in steps
000000 000000
000000
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000820
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00007f
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007f00 007f00
007f00
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00081d
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00ff7f
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00081a
00ffff 00ffff
00ffff
7f0000 7f0000
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7f007f 7f007f
7f007f
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000817
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7f00ff
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000912 000912
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00090c 00090c
00090c
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff
000a0a 000a0a
000a0a