| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [art] [adj] period | 3789 |
|
| 2 | [prep] such [art] [adj] | 2180 |
|
| 3 | such [art] [adj] period | 32 |
|
| 4 | [prep] such [art] period | 18 |
|
