by steps
000000 000000
000000
4b894b 4b894b
4b894b
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00ff7f
568a56 568a56
568a56
00ffff 00ffff
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5b8b5c 5b8b5c
5b8b5c
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6c8d6d
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728e73 728e73
728e73
ffff00 ffff00
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ffffff ffffff
ffffff
788f79 788f79
788f79