by steps
000000 000000
000000
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7a8578
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00007f
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0000ff
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728c78 728c78
728c78
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007fff
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00ff7f
6a9478 6a9478
6a9478
00ffff 00ffff
00ffff
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639b79 639b79
639b79
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53ab79 53ab79
53ab79
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ff7fff ff7fff
ff7fff
44ba7a 44ba7a
44ba7a
ffff00 ffff00
ffff00
ffff7f ffff7f
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ffffff ffffff
ffffff
3dc27b 3dc27b
3dc27b