21,27,156
#
in steps
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151a99
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0000ff
007f00 007f00
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007f7f 007f7f
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151a9a 151a9a
151a9a
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151a9b 151a9b
151a9b
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151b9f 151b9f
151b9f
ffff00 ffff00
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ffffff ffffff
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161ca0 161ca0
161ca0