| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] a [noun] [prep] | 132639 |
|
| 2 | [verb] [art] period [prep] | 533 |
|
| 3 | [verb] [art] period [prep] | 533 |
|
| 4 | [verb] a period [prep] | 347 |
|
| 5 | [verb] a period [prep] | 347 |
|
