21,25,241
#
in steps
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000000
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1013f4
00007f 00007f
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0000ff
007f00 007f00
007f00
007f7f 007f7f
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1216f2 1216f2
1216f2
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161af0 161af0
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191dee 191dee
191dee
ffff00 ffff00
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ffff7f ffff7f
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ffffff ffffff
ffffff
1b1fee 1b1fee
1b1fee