21,96,128
#
in steps
000000 000000
000000
16647b 16647b
16647b
00007f 00007f
00007f
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0000ff
007f00 007f00
007f00
007f7f 007f7f
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15637c
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007fff
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00ff00
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00ff7f
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15627d
00ffff 00ffff
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7f007f 7f007f
7f007f
15617f 15617f
15617f
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7f7f7f 7f7f7f
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155f81 155f81
155f81
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155d84 155d84
155d84
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff
155d86 155d86
155d86