21,72,185
#
in steps
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000000
1348bb 1348bb
1348bb
00007f 00007f
00007f
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0000ff
007f00 007f00
007f00
007f7f 007f7f
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1348ba 1348ba
1348ba
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1448ba 1448ba
1448ba
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1448b9
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1548b9 1548b9
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1548b8
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1648b8 1648b8
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1648b7 1648b7
1648b7
ffff00 ffff00
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ffff7f ffff7f
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ffffff ffffff
ffffff
1748b7 1748b7
1748b7