by steps
000000 000000
000000
ff7fff ff7fff
ff7fff
00007f 00007f
00007f
0000ff 0000ff
0000ff
007f00 007f00
007f00
007f7f 007f7f
007f7f
f971fa f971fa
f971fa
007fff 007fff
007fff
00ff00 00ff00
00ff00
00ff7f 00ff7f
00ff7f
f364f5 f364f5
f364f5
00ffff 00ffff
00ffff
7f0000 7f0000
7f0000
7f007f 7f007f
7f007f
ed57f0 ed57f0
ed57f0
7f00ff 7f00ff
7f00ff
7f7f00 7f7f00
7f7f00
7f7f7f 7f7f7f
7f7f7f
e74aeb e74aeb
e74aeb
7f7fff 7f7fff
7f7fff
7fff00 7fff00
7fff00
7fff7f 7fff7f
7fff7f
7fffff 7fffff
7fffff
e13ce6 e13ce6
e13ce6
ff0000 ff0000
ff0000
ff007f ff007f
ff007f
ff00ff ff00ff
ff00ff
db2fe1 db2fe1
db2fe1
ff7f00 ff7f00
ff7f00
ff7f7f ff7f7f
ff7f7f
d522dc d522dc
d522dc
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff
d015d7 d015d7
d015d7