by steps
000000 000000
000000
ff007f ff007f
ff007f
00007f 00007f
00007f
0000ff 0000ff
0000ff
007f00 007f00
007f00
007f7f 007f7f
007f7f
e11f7e e11f7e
e11f7e
007fff 007fff
007fff
00ff00 00ff00
00ff00
00ff7f 00ff7f
00ff7f
c43e7d c43e7d
c43e7d
00ffff 00ffff
00ffff
7f0000 7f0000
7f0000
7f007f 7f007f
7f007f
a65e7d a65e7d
a65e7d
7f00ff 7f00ff
7f00ff
7f7f00 7f7f00
7f7f00
7f7f7f 7f7f7f
7f7f7f
897d7c 897d7c
897d7c
7f7fff 7f7fff
7f7fff
7fff00 7fff00
7fff00
7fff7f 7fff7f
7fff7f
7fffff 7fffff
7fffff
6b9c7b 6b9c7b
6b9c7b
ff0000 ff0000
ff0000
ff00ff ff00ff
ff00ff
4ebc7b 4ebc7b
4ebc7b
ff7f00 ff7f00
ff7f00
ff7f7f ff7f7f
ff7f7f
ff7fff ff7fff
ff7fff
30db7a 30db7a
30db7a
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff
13fb7a 13fb7a
13fb7a