by steps
000000 000000
000000
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ff00ff
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00007f
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0000ff
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a15bbf a15bbf
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8972af 8972af
8972af
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72899f 72899f
72899f
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ff7fff
5aa08f 5aa08f
5aa08f
ffff00 ffff00
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ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff
43b77f 43b77f
43b77f