by steps
000000 000000
000000
d728b2 d728b2
d728b2
00007f 00007f
00007f
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0000ff
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007f7f
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bc42bb
007fff 007fff
007fff
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00ff7f
a15dc5 a15dc5
a15dc5
00ffff 00ffff
00ffff
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7f007f
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8678ce
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6b93d8
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7fffff
50aee2 50aee2
50aee2
ff0000 ff0000
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35c9eb 35c9eb
35c9eb
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ff7f00
ff7f7f ff7f7f
ff7f7f
ff7fff ff7fff
ff7fff
1ae4f5 1ae4f5
1ae4f5
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff