| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] [prep] a [adj] [noun] | 6309 |
|
| 2 | [conj] [prep] [art] [adj] period | 215 |
|
| 3 | [conj] [prep] [art] [adj] period | 215 |
|
| 4 | [conj] [prep] a [adj] period | 78 |
|
