| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] over a period [prep] time | 75 |
|
| 2 | [noun pl] over a period [prep] [noun] | 42 |
|
| 3 | [noun pl] [prep] a period [prep] time | 27 |
|
| 4 | [noun pl] [prep] a period [prep] time | 27 |
|
| 5 | [noun pl] over [art] period [prep] time | 24 |
|
| 6 | [noun pl] over [art] period [prep] time | 24 |
|
| 7 | [noun pl] over a period [prep] time | 23 |
|
| 8 | [noun pl] over a period [prep] time | 23 |
|
| 9 | [noun pl] over a period [prep] time | 23 |
|
| 10 | [noun pl] over a [noun sg] [prep] time | 23 |
|
| 11 | [noun pl] over a period [prep] time | 23 |
|
| 12 | [noun pl] over a [noun] [prep] time | 23 |
|
