| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] [adj] period | 499 |
|
| 2 | [adv] brief [noun] | 169 |
|
| 3 | [adv] brief [noun sg] | 122 |
|
| 4 | [adv] brief period | 17 |
|
