| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | for a [adj] period | 653 |
|
| 2 | for a [adj] period | 590 |
|
| 3 | for a brief [noun] | 176 |
|
| 4 | for a brief [noun sg] | 175 |
|
| 5 | [prep] a brief period | 60 |
|
| 6 | for [art] brief period | 41 |
|
| 7 | for a brief period | 41 |
|
| 8 | for a brief period | 41 |
|
| 9 | for [art] brief period | 41 |
|
| 10 | for a brief period | 41 |
|
