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| preorder (обхода вершин графа) | |||
| preorder (способ прохождения дерева) | |||
| прямой порядок: 26 phrases in 12 subjects |
| Banking | 1 |
| General | 2 |
| Information technology | 2 |
| Linguistics | 1 |
| Mass media | 2 |
| Mathematics | 2 |
| Medical | 1 |
| Microsoft | 2 |
| Military | 1 |
| Mining | 1 |
| Nautical | 1 |
| Programming | 10 |