by steps
000000 000000
000000
1d7efc 1d7efc
1d7efc
00007f 00007f
00007f
0000ff 0000ff
0000ff
007f00 007f00
007f00
007f7f 007f7f
007f7f
377df9 377df9
377df9
007fff 007fff
007fff
00ff00 00ff00
00ff00
00ff7f 00ff7f
00ff7f
517cf7 517cf7
517cf7
00ffff 00ffff
00ffff
7f0000 7f0000
7f0000
7f007f 7f007f
7f007f
6b7bf4 6b7bf4
6b7bf4
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7f00ff
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7f7f00
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7f7f7f
857af2 857af2
857af2
7f7fff 7f7fff
7f7fff
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7fff7f
7fffff 7fffff
7fffff
9f79ef 9f79ef
9f79ef
ff0000 ff0000
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b978ed b978ed
b978ed
ff7f00 ff7f00
ff7f00
ff7f7f ff7f7f
ff7f7f
ff7fff ff7fff
ff7fff
d377ea d377ea
d377ea
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff
ed77e8 ed77e8
ed77e8