| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [det] [noun] over [art] period of | 20 |
|
| 2 | [det] [noun] over [art] period [prep] | 20 |
|
| 3 | [det] [noun] over a period [prep] | 19 |
|
| 4 | [det] [noun sg] over [art] period [prep] | 9 |
|
| 5 | [det] [noun pl] over [art] period [prep] | 9 |
|
