| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] over a [adj] period | 262 |
|
| 2 | [noun sg] over a [adj] period | 156 |
|
| 3 | [noun] [noun sg] over a [adj] | 76 |
|
| 4 | [noun] [noun sg] over a period | 17 |
|
