| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] a brief [noun] | 474 |
|
| 2 | [verb] a [adj] period | 247 |
|
| 3 | [verb] a [adj] period | 222 |
|
| 4 | [verb] [art] brief period | 19 |
|
| 5 | [verb] a brief period | 19 |
|
| 6 | [verb] [art] brief period | 19 |
|
| 7 | [verb] a brief period | 18 |
|
