| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [prep] [art] long period | 187 |
|
| 2 | [noun] [vb pp] [prep] [art] long | 98 |
|
| 3 | [noun] [vb pp] [prep] [art] period | 77 |
|
| 4 | [vb pp] [prep] [art] long period | 70 |
|
