by steps
000000 000000
000000
728d17 728d17
728d17
00007f 00007f
00007f
0000ff 0000ff
0000ff
007f00 007f00
007f00
007f7f 007f7f
007f7f
718f17 718f17
718f17
007fff 007fff
007fff
00ff00 00ff00
00ff00
00ff7f 00ff7f
00ff7f
719117 719117
719117
00ffff 00ffff
00ffff
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7f0000
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7f007f
719318 719318
719318
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7f7f00
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7f7f7f
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719618
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7f7fff
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7fff7f 7fff7f
7fff7f
7fffff 7fffff
7fffff
709818 709818
709818
ff0000 ff0000
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ff00ff
709a19 709a19
709a19
ff7f00 ff7f00
ff7f00
ff7f7f ff7f7f
ff7f7f
ff7fff ff7fff
ff7fff
709c19 709c19
709c19
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff
709f1a 709f1a
709f1a