by steps
000000 000000
000000
21e728 21e728
21e728
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00007f
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0000ff
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007f00
007f7f 007f7f
007f7f
21e629 21e629
21e629
007fff 007fff
007fff
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00ff00
00ff7f 00ff7f
00ff7f
22e62a 22e62a
22e62a
00ffff 00ffff
00ffff
7f0000 7f0000
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7f007f 7f007f
7f007f
23e52b 23e52b
23e52b
7f00ff 7f00ff
7f00ff
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7f7f00
7f7f7f 7f7f7f
7f7f7f
24e52c 24e52c
24e52c
7f7fff 7f7fff
7f7fff
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7fff7f 7fff7f
7fff7f
7fffff 7fffff
7fffff
25e52d 25e52d
25e52d
ff0000 ff0000
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26e42e 26e42e
26e42e
ff7f00 ff7f00
ff7f00
ff7f7f ff7f7f
ff7f7f
ff7fff ff7fff
ff7fff
27e42f 27e42f
27e42f
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff
28e431 28e431
28e431