by steps
000000 000000
000000
6e885e 6e885e
6e885e
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00007f
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0000ff
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6f895f
007fff 007fff
007fff
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00ff7f
718a61 718a61
718a61
00ffff 00ffff
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728c63 728c63
728c63
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768e66 768e66
768e66
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779068 779068
779068
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ff7f7f
ff7fff ff7fff
ff7fff
79916a 79916a
79916a
ffff00 ffff00
ffff00
ffff7f ffff7f
ffff7f
ffffff ffffff
ffffff
7b936c 7b936c
7b936c