13,32,63
#
in steps
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000000
1b4000 1b4000
1b4000
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0000ff
007f00 007f00
007f00
007f7f 007f7f
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17380f
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14301f
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03086f 03086f
03086f
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff