| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun sg] [noun pl] [prep] a long period | 7 |
|
| 2 | [noun] [noun pl] [prep] a long period | 7 |
|
| 3 | [noun] [noun pl] over a long period | 6 |
|
| 4 | [noun] [noun pl] over a long period | 6 |
|
| 5 | [noun] [noun pl] [prep] a long period | 5 |
|
