by steps
000000 000000
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fb9782 fb9782
fb9782
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db8491
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007fff
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00ff7f
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bc71a1
00ffff 00ffff
00ffff
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7f0000
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7f007f
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9c5eb0
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7fffff
5e38d0 5e38d0
5e38d0
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3e25df 3e25df
3e25df
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ff7f7f
ff7fff ff7fff
ff7fff
1f12ef 1f12ef
1f12ef
ffff00 ffff00
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ffff7f
ffffff ffffff
ffffff