by steps
000000 000000
000000
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00ff00
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00007f
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0000ff
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13ea07
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26d60e 26d60e
26d60e
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00ffff
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39c216 39c216
39c216
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4cae1d
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5f9a24
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72862c 72862c
72862c
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ff7f7f
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ff7fff
857233 857233
857233
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ffffff ffffff
ffffff
995e3b 995e3b
995e3b