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| letter (An activity that tracks the delivery of a letter. The activity can contain the electronic copy of the letter); leaf (A node with no child objects represented in the tree); leaf node (A node with no child objects represented in the tree) | |||
| List: 28 phrases in 13 subjects |
| Agriculture | 1 |
| Education | 1 |
| Environment | 1 |
| Finances | 3 |
| Forestry | 2 |
| General | 3 |
| Law | 3 |
| Mechanic engineering | 1 |
| Medical | 1 |
| Microsoft | 2 |
| Politics | 3 |
| Procedural law | 3 |
| Transport | 4 |