15,21,237
#
in steps
000000 000000
000000
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0d12f0
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00007f
0000ff 0000ff
0000ff
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007f00
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0d12ef
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0e13ee 0e13ee
0e13ee
00ffff 00ffff
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1016eb 1016eb
1016eb
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ff7fff ff7fff
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1017ea 1017ea
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ffff00 ffff00
ffff00
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ffffff ffffff
ffffff
1118ea 1118ea
1118ea