by steps
000000 000000
000000
df1f1e df1f1e
df1f1e
00007f 00007f
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0000ff
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c33a38
007fff 007fff
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a85553 a85553
a85553
00ffff 00ffff
00ffff
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8d706e
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7f7f7f
728c89 728c89
728c89
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56a7a3 56a7a3
56a7a3
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3bc2be 3bc2be
3bc2be
ff7f00 ff7f00
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ff7f7f
ff7fff ff7fff
ff7fff
20ddd9 20ddd9
20ddd9
ffff00 ffff00
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ffffff ffffff
ffffff
05f9f4 05f9f4
05f9f4