8,36,216
#
in steps
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0000ff
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00007f
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007f7f 007f7f
007f7f
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061be2
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0e3fbb 0e3fbb
0e3fbb
ffff00 ffff00
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ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff
1148b2 1148b2
1148b2