by steps
000000 000000
000000
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af88ab
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00007f
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0000ff
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007f7f
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a98695
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007fff
00ff00 00ff00
00ff00
00ff7f 00ff7f
00ff7f
a38580 a38580
a38580
00ffff 00ffff
00ffff
7f0000 7f0000
7f0000
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7f007f
9d846a 9d846a
9d846a
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7f7f00 7f7f00
7f7f00
7f7f7f 7f7f7f
7f7f7f
978355 978355
978355
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7f7fff
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7fff7f 7fff7f
7fff7f
7fffff 7fffff
7fffff
918240 918240
918240
ff0000 ff0000
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8b812a 8b812a
8b812a
ff7f00 ff7f00
ff7f00
ff7f7f ff7f7f
ff7f7f
ff7fff ff7fff
ff7fff
858015 858015
858015
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff