by steps
000000 000000
000000
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7f7f00
00007f 00007f
00007f
0000ff 0000ff
0000ff
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007f00
007f7f 007f7f
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728204 728204
728204
007fff 007fff
007fff
00ff00 00ff00
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00ff7f
668608 668608
668608
00ffff 00ffff
00ffff
7f0000 7f0000
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7f007f
5a890c 5a890c
5a890c
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7f7f7f 7f7f7f
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4e8d10
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7fffff
419114 419114
419114
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359418 359418
359418
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ff7f7f ff7f7f
ff7f7f
ff7fff ff7fff
ff7fff
29981c 29981c
29981c
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff
1d9c20 1d9c20
1d9c20