| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [art] [adj] period | 3789 |
|
| 2 | [prep] [art] [adj] for | 377 |
|
| 3 | [art] [adj] period for | 80 |
|
| 4 | [prep] [art] period for | 15 |
|
