| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | a [adj] period [prep] | 1182 |
|
| 2 | a brief [noun] [prep] | 1067 |
|
| 3 | a brief [noun sg] [prep] | 1058 |
|
| 4 | [art] brief period [prep] | 69 |
|
| 5 | [art] brief period [prep] | 69 |
|
| 6 | a brief period [prep] | 63 |
|
| 7 | a brief period [prep] | 63 |
|
