| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] over [det] period of | 5 |
|
| 2 | over [det] period of [noun] | 6 |
|
| 3 | over [det] period of time | 5 |
|
| 4 | over [det] period of time | 5 |
|
| 5 | over [det] period of [noun sg] | 5 |
|
