| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] [noun] over a period | 111 |
|
| 2 | [adj] [noun] [conj] over a | 21 |
|
| 3 | [adj] [noun] [conj] a period | 10 |
|
| 4 | [noun] [conj] over a period | 8 |
|
