18,63,3
#
in steps
000000 000000
000000
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007f00
00007f 00007f
00007f
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007f7f 007f7f
007f7f
046f00 046f00
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00ff7f
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095f01
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0d4f02
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123f03 123f03
123f03
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162f04 162f04
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1f0f06 1f0f06
1f0f06
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff
240007 240007
240007