by steps
000000 000000
000000
7fff7f 7fff7f
7fff7f
00007f 00007f
00007f
0000ff 0000ff
0000ff
007f00 007f00
007f00
007f7f 007f7f
007f7f
79fb72 79fb72
79fb72
007fff 007fff
007fff
00ff00 00ff00
00ff00
00ff7f 00ff7f
00ff7f
74f866 74f866
74f866
00ffff 00ffff
00ffff
7f0000 7f0000
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7f007f 7f007f
7f007f
6ff459 6ff459
6ff459
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7f7f00 7f7f00
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6af14d 6af14d
6af14d
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7fffff 7fffff
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64ee41 64ee41
64ee41
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5fea34 5fea34
5fea34
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ff7f00
ff7f7f ff7f7f
ff7f7f
ff7fff ff7fff
ff7fff
5ae728 5ae728
5ae728
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff
55e41c 55e41c
55e41c