by steps
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77f877
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007f7f 007f7f
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71f877
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6bf877
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66f878 66f878
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60f978 60f978
60f978
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5af978
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55f979 55f979
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ff7f7f
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ff7fff
4ff979 4ff979
4ff979
ffff00 ffff00
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ffff7f
ffffff ffffff
ffffff
4afa7a 4afa7a
4afa7a