by steps
000000 000000
000000
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bb3cb0
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00007f
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0000ff
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b839ac
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b536a9
00ffff 00ffff
00ffff
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b233a6
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7f7f7f
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b031a3
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7fff7f
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7fffff
ad2e9f ad2e9f
ad2e9f
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aa2b9c aa2b9c
aa2b9c
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ff7f00
ff7f7f ff7f7f
ff7f7f
ff7fff ff7fff
ff7fff
a72899 a72899
a72899
ffff00 ffff00
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ffff7f
ffffff ffffff
ffffff
a52696 a52696
a52696