by steps
000000 000000
000000
9e8332 9e8332
9e8332
00007f 00007f
00007f
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0000ff
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007f7f 007f7f
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9d8238 9d8238
9d8238
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007fff
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00ff7f
9c823e 9c823e
9c823e
00ffff 00ffff
00ffff
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9b8245
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7fffff
998251 998251
998251
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988258 988258
988258
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ff7f00
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ff7f7f
ff7fff ff7fff
ff7fff
97825e 97825e
97825e
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff
968265 968265
968265