by steps
000000 000000
000000
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5a3793
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6e5090
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83698e 83698e
83698e
00ffff 00ffff
00ffff
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97828b 97828b
97828b
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ff7f7f
ff7fff ff7fff
ff7fff
eae681 eae681
eae681
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff