| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] long period | 348 |
|
| 2 | [prep] long period | 348 |
|
| 3 | over [adj] period | 247 |
|
| 4 | over [adj] period | 102 |
|
| 5 | over long [noun] | 92 |
|
| 6 | over long period | 53 |
|
| 7 | over long period | 48 |
|
