28,21,187
#
in steps
000000 000000
000000
1912b4 1912b4
1912b4
00007f 00007f
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0000ff
007f00 007f00
007f00
007f7f 007f7f
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1912b5 1912b5
1912b5
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1a13b7 1a13b7
1a13b7
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1f18c1 1f18c1
1f18c1
ffff00 ffff00
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ffffff ffffff
ffffff
2019c3 2019c3
2019c3