| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [prep] a [adj] period of | 223 |
|
| 2 | [noun] over a [adj] [noun] of | 200 |
|
| 3 | [noun] over a [adj] [noun sg] of | 197 |
|
| 4 | [noun] over a [adj] period [prep] | 97 |
|
| 5 | [noun] over [art] [adj] period of | 91 |
|
| 6 | [noun] over [art] [adj] period of | 91 |
|
| 7 | [noun] over a [adj] period of | 82 |
|
| 8 | [noun] over a [adj] period of | 77 |
|
