by steps
000000 000000
000000
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13eb12
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26d724 26d724
26d724
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00ffff
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39c337 39c337
39c337
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7fffff
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72876e 72876e
72876e
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ff7f7f
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ff7fff
857380 857380
857380
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ffff00
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ffff7f
ffffff ffffff
ffffff
995f93 995f93
995f93