| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | a [adj] period in | 112 |
|
| 2 | a brief [noun] in | 106 |
|
| 3 | a brief [noun sg] in | 106 |
|
| 4 | a brief period [prep] | 63 |
|
| 5 | [art] brief period in | 11 |
|
| 6 | a brief period in | 11 |
|
| 7 | [art] brief period in | 11 |
|
| 8 | a brief period in | 11 |
|
