123,7,71
#
in steps
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000000
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00007f
0000ff 0000ff
0000ff
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007f7f 007f7f
007f7f
1e0171 1e0171
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3d0363 3d0363
3d0363
00ffff 00ffff
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d80c1d d80c1d
d80c1d
ffff00 ffff00
ffff00
ffff7f ffff7f
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ffffff ffffff
ffffff
f70e0f f70e0f
f70e0f