| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | only for [art] short period | 9 |
|
| 2 | only [prep] [art] short period | 9 |
|
| 3 | only [prep] [art] short period | 9 |
|
| 4 | only [prep] a short period | 9 |
|
| 5 | only [prep] a short period | 9 |
|
