| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb pp] over a [adj] period | 71 |
|
| 2 | have [vb pp] over a [adj] | 32 |
|
| 3 | have [vb pp] a [adj] period | 13 |
|
| 4 | have [vb pp] over a period | 7 |
|
