by steps
000000 000000
000000
2a436a 2a436a
2a436a
00007f 00007f
00007f
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0000ff
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245a7c 245a7c
245a7c
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00ff7f
1f728f 1f728f
1f728f
00ffff 00ffff
00ffff
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1a89a1 1a89a1
1a89a1
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15a1b4
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0fb8c7 0fb8c7
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0ad0d9
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ff7f7f
ff7fff ff7fff
ff7fff
05e7ec 05e7ec
05e7ec
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff