by steps
000000 000000
000000
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f94092
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00007f
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f83894
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007fff
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f73096
00ffff 00ffff
00ffff
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7f007f
f72899 f72899
f72899
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f5189d
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f510a0
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ff7f7f
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f408a2
ffff00 ffff00
ffff00
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ffff7f
ffffff ffffff
ffffff
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f401a5