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| kételemű megkötés (A constraint that applies to two elements, such as two classes or two associations. The constraint is shown as a dashed arrow from one element to the other, labeled by the constraint string in braces ({ })) | |||
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2 : 13 phrases in 5 subjects |
| Environment | 1 |
| Food industry | 7 |
| Gymnastics | 2 |
| Health care | 1 |
| Pharmacy and pharmacology | 2 |