by steps
000000 000000
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9b9b9b
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7f7f7f
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999199
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988e98
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988c98
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ff7f7f ff7f7f
ff7f7f
ff7fff ff7fff
ff7fff
978997 978997
978997
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff
978797 978797
978797