| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [adj] [conj] a [noun] | 1155 |
|
| 2 | [prep] [adj] [conj] [art] period | 12 |
|
| 3 | [prep] [adj] [conj] [art] period | 12 |
|
| 4 | [prep] [adj] [conj] a period | 8 |
|
