7,25,253
#
in steps
000000 000000
000000
0000ff 0000ff
0000ff
00007f 00007f
00007f
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007f00
007f7f 007f7f
007f7f
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00ff00
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00ff7f
030cfe 030cfe
030cfe
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7f007f 7f007f
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7f7f7f
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7fff7f 7fff7f
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7fffff 7fffff
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091ffd 091ffd
091ffd
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0b25fc 0b25fc
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0d2bfc 0d2bfc
0d2bfc
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff
0f32fc 0f32fc
0f32fc