by steps
000000 000000
000000
6c8d21 6c8d21
6c8d21
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6e8c22
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708c23 708c23
708c23
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728c25 728c25
728c25
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758c26
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7b8b2a 7b8b2a
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ffff00 ffff00
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ffffff ffffff
ffffff
7e8b2c 7e8b2c
7e8b2c