| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] over a long period | 120 |
|
| 2 | [adj] [noun] over a period | 111 |
|
| 3 | [adj] [noun] over a long | 52 |
|
| 4 | [adj] over a long period | 6 |
|
