| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] [prep] a short period | 14 |
|
| 2 | [conj] [prep] a short period | 14 |
|
| 3 | [conj] for a short period | 9 |
|
| 4 | [conj] for a short period | 9 |
|
| 5 | [conj] a short period [prep] | 5 |
|
| 6 | [conj] a short period [prep] | 5 |
|
