No | Pattern | Freq | Relations |
---|---|---|---|
1 | [vb pp] over a [adj] period | 71 | |
2 | [vb pp] over a long period | 44 | |
3 | [vb pp] over a long period | 34 | |
4 | [vb pp] over a [adj -er] period | 12 | |
5 | [vb pp] over a longer period | 10 | |
6 | [vb pp] over a three-year period | 5 | |
7 | [vb pp] over a three-year period | 5 | |
8 | developed over a [adj] period | 5 |