by steps
000000 000000
000000
ff7fff ff7fff
ff7fff
00007f 00007f
00007f
0000ff 0000ff
0000ff
007f00 007f00
007f00
007f7f 007f7f
007f7f
ef7efb ef7efb
ef7efb
007fff 007fff
007fff
00ff00 00ff00
00ff00
00ff7f 00ff7f
00ff7f
e07ef8 e07ef8
e07ef8
00ffff 00ffff
00ffff
7f0000 7f0000
7f0000
7f007f 7f007f
7f007f
d07ef4 d07ef4
d07ef4
7f00ff 7f00ff
7f00ff
7f7f00 7f7f00
7f7f00
7f7f7f 7f7f7f
7f7f7f
c17ef1 c17ef1
c17ef1
7f7fff 7f7fff
7f7fff
7fff00 7fff00
7fff00
7fff7f 7fff7f
7fff7f
7fffff 7fffff
7fffff
b17eee b17eee
b17eee
ff0000 ff0000
ff0000
ff007f ff007f
ff007f
ff00ff ff00ff
ff00ff
a27eea a27eea
a27eea
ff7f00 ff7f00
ff7f00
ff7f7f ff7f7f
ff7f7f
927ee7 927ee7
927ee7
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff
837ee4 837ee4
837ee4