| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [art] [adv] brief period [prep] | 7 |
|
| 2 | a [adv] brief period [prep] | 7 |
|
| 3 | [art] [adv] brief period [prep] | 7 |
|
| 4 | a [adv] brief period [prep] | 6 |
|
