by steps
000000 000000
000000
007f7f 007f7f
007f7f
00007f 00007f
00007f
0000ff 0000ff
0000ff
007f00 007f00
007f00
12808f 12808f
12808f
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007fff
00ff00 00ff00
00ff00
00ff7f 00ff7f
00ff7f
25829f 25829f
25829f
00ffff 00ffff
00ffff
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7f007f 7f007f
7f007f
3883af 3883af
3883af
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7f7f7f 7f7f7f
7f7f7f
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7fff7f
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5e87cf 5e87cf
5e87cf
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ff7f7f ff7f7f
ff7f7f
ff7fff ff7fff
ff7fff
848aef 848aef
848aef
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff
978cff 978cff
978cff