by steps
000000 000000
000000
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936a88
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00007f
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0000ff
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007f00
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947288
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007fff
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00ff7f
967a89 967a89
967a89
00ffff 00ffff
00ffff
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7f007f
97828a 97828a
97828a
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998a8b
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9a928b 9a928b
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9c9a8c
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ff7f7f
ff7fff ff7fff
ff7fff
9da28d 9da28d
9da28d
ffff00 ffff00
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ffff7f
ffffff ffffff
ffffff
9fab8e 9fab8e
9fab8e