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face:219017.0
face:219017.0
face:219017.0
face:219017.0
face:219017.0
face:219017.0
face:219017.0
face:219017.0
face:219017.0
hi
{"x":0,"y":0} to {"x":0,"y":0}
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Engin Umut Akkaya - Reaction mechanism.JPG
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