| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [prep] a [noun] | 117020 |
|
| 2 | [verb] [prep] [art] period | 964 |
|
| 3 | [verb] [prep] [art] period | 964 |
|
| 4 | [verb] [prep] a period | 506 |
|
| 5 | [verb] [prep] a period | 506 |
|
