| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] have [vb pp] over a period | 5 |
|
| 2 | have [vb pp] over a [adj] period | 14 |
|
| 3 | have [vb pp] over a [adj] period | 14 |
|
| 4 | have [vb pp] over a long period | 12 |
|
| 5 | have [vb pp] over a long period | 12 |
|
| 6 | have [vb pp] over a period [prep] | 6 |
|
| 7 | have [vb pp] over a period [prep] | 6 |
|
| 8 | have [vb pp] over a period of | 6 |
|
| 9 | have [vb pp] over a period of | 6 |
|
