by steps
000000 000000
000000
728d8d 728d8d
728d8d
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00007f
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0000ff
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7a9494
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00ff7f
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839b9b
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00ffff
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8ca2a2
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7f7f7f
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95a9a9
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a6b7b7
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ff7f7f
ff7fff ff7fff
ff7fff
afbebe afbebe
afbebe
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ffff7f
ffffff ffffff
ffffff
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b8c6c6