by steps
000000 000000
000000
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7f7f7f
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00007f
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0000ff
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788689
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007fff
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728e94 728e94
728e94
00ffff 00ffff
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5fa5b4
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ff7fff ff7fff
ff7fff
53b5ca 53b5ca
53b5ca
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ffff00
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ffff7f
ffffff ffffff
ffffff
4dbdd5 4dbdd5
4dbdd5