by steps
000000 000000
000000
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d81aef
00007f 00007f
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bd26e1
007fff 007fff
007fff
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00ff7f
a233d3 a233d3
a233d3
00ffff 00ffff
00ffff
7f0000 7f0000
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873fc5 873fc5
873fc5
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6c4cb7
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5159a9 5159a9
5159a9
ff0000 ff0000
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36659b 36659b
36659b
ff7f00 ff7f00
ff7f00
ff7f7f ff7f7f
ff7f7f
ff7fff ff7fff
ff7fff
1b728d 1b728d
1b728d
ffff00 ffff00
ffff00
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ffff7f
ffffff ffffff
ffffff