42,3,221
#
in steps
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000000
0000ff 0000ff
0000ff
00007f 00007f
00007f
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007f00
007f7f 007f7f
007f7f
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00ff7f
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00ffff 00ffff
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1f02e5 1f02e5
1f02e5
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3403d4 3403d4
3403d4
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4905c3 4905c3
4905c3
ffff00 ffff00
ffff00
ffff7f ffff7f
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ffffff ffffff
ffffff
5406bb 5406bb
5406bb