| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [noun] [prep] [art] period | 111 |
|
| 2 | [noun] [prep] [art] longer period | 41 |
|
| 3 | [verb] [noun] [prep] [art] longer | 25 |
|
| 4 | [verb] [prep] [art] longer period | 19 |
|
