| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] over a [adj] period | 262 |
|
| 2 | [noun sg] over a [adj] period | 156 |
|
| 3 | [noun sg] [noun] over a [adj] | 101 |
|
| 4 | [noun sg] [noun] over a period | 33 |
|
