| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [art] period [prep] [noun] | 1040 |
|
| 2 | [prep] [art] long period [prep] | 198 |
|
| 3 | [art] long period [prep] [noun] | 198 |
|
| 4 | [prep] [art] long [prep] [noun] | 5 |
|
