| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [prep] a [adj] period of | 145 |
|
| 2 | [verb] [prep] a [adj] period of | 145 |
|
| 3 | [verb] over a [adj] [noun] of | 76 |
|
| 4 | [verb] over a [adj] period [prep] | 25 |
|
| 5 | [verb] over a [adj] period [prep] | 25 |
|
| 6 | [verb] over a [adj] period of | 24 |
|
| 7 | [verb] over [art] [adj] period of | 23 |
|
| 8 | [verb] over a [adj] period of | 22 |
|
| 9 | [verb] over a [adj] period of | 22 |
|
