7,4,124
#
in steps
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000000
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00007f
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007f00
007f7f 007f7f
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7f007f 7f007f
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05037c 05037c
05037c
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07047c 07047c
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7fffff 7fffff
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09057b 09057b
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ff7fff ff7fff
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0d0779 0d0779
0d0779
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff
0f0879 0f0879
0f0879