by steps
000000 000000
000000
7f7f7f 7f7f7f
7f7f7f
00007f 00007f
00007f
0000ff 0000ff
0000ff
007f00 007f00
007f00
007f7f 007f7f
007f7f
728c78 728c78
728c78
007fff 007fff
007fff
00ff00 00ff00
00ff00
00ff7f 00ff7f
00ff7f
669972 669972
669972
00ffff 00ffff
00ffff
7f0000 7f0000
7f0000
7f007f 7f007f
7f007f
59a66c 59a66c
59a66c
7f00ff 7f00ff
7f00ff
7f7f00 7f7f00
7f7f00
4db366 4db366
4db366
7f7fff 7f7fff
7f7fff
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7fff7f
7fffff 7fffff
7fffff
41c060 41c060
41c060
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34cd5a 34cd5a
34cd5a
ff7f00 ff7f00
ff7f00
ff7f7f ff7f7f
ff7f7f
ff7fff ff7fff
ff7fff
28da54 28da54
28da54
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff
1ce74e 1ce74e
1ce74e