by steps
000000 000000
000000
71a4b0 71a4b0
71a4b0
00007f 00007f
00007f
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0000ff
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728fb9 728fb9
728fb9
007fff 007fff
007fff
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00ff7f
747bc3 747bc3
747bc3
00ffff 00ffff
00ffff
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793de1
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ff7f7f
ff7fff ff7fff
ff7fff
7d14f5 7d14f5
7d14f5
ffff00 ffff00
ffff00
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ffff7f
ffffff ffffff
ffffff