12,3,175
#
in steps
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000000
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0000ff
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00007f
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007f00
007f7f 007f7f
007f7f
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0601d7
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0c03af
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7fff7f 7fff7f
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7fffff 7fffff
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0f049b 0f049b
0f049b
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120587
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ff7fff ff7fff
ff7fff
150673 150673
150673
ffff00 ffff00
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ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff
18075f 18075f
18075f