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|rectangle 1|unknown|factor|term| edge| 
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|  length   |       |     2|   0|     |
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|  width    |       |     1|   0|     |
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|  area     |       |      |    |     |
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|rectangle 2|unknown|factor|term| edge| 
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|  length   |       |     2|   3|     |
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|  width    |       |     1|   0|     |
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|  area     |       |      |    |     |
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