| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [prep] [art] period [prep] | 648 |
|
| 2 | [prep] [art] long period [prep] | 180 |
|
| 3 | [verb] [prep] [art] long period | 76 |
|
| 4 | [verb] [prep] long period [prep] | 69 |
|
| 5 | [verb] [art] long period [prep] | 26 |
|
